L.,
Since you are a spiritual person, let me address this spiritually. This could be an attack from Satan, as in, these thoughts are not originating with you. Satan will attack us where we are most vulnerable, and your intense love for your son is your vulnerable place.
Just like Jesus in the wilderness, Satan attacked Jesus with words. Satan even used scripture (ie truth) to his advantage, but Jesus answered him.
The world today is a scary place, but God has promised us that He would never give us a situation that we could not handle. He is on our side, and when we have God and His Heavenly Host on our side, who can be against us?
Here is what I have done. I have used visualization when I am feeling overwhelmed. I picture myself holding my child in my arms and then I picture Jesus standing before me, and I visualize myself placing my child in Jesus' arms. And I say, "Lord, I fear that I can't always give this child what he needs, but I know that you know everything he needs, and I trust you to take care of him." Whenever I feel fearful, whatever the situation is, I immediately take myself to that place where I am laying the person or situation in His arms, and let him take it from me.
Secondly, I am a big proponent of "names". I believe that we are called by certain names, such as "daughter", "mother", "beloved", "chosen". However, Satan can also call us names. He can call us "weak", "unworthy", "frightened one" or "victim". And one weapon I have used is to let Satan know, in the name of Jesus My Lord, that he is not allowed to call me any name besides "Child of The Most High God". That Satan has no authority in my life because I am God's beloved.
One time I was in the city of Wilmington at night, walking on a sidewalk. Two men in a car stopped their car in the middle of the block right beside me on the street. I could tell that they meant to do something to me. And I said loudly in my head, "Satan, you many NOT call me victim. I am the child of the Most High God, and you may not call me by any other name!" And the two men sped away in their car.
I have done this many times. There was another time when a man was following me in a store. It was very obvious that he was following me, and he spoke to me several times, and each time he was getting a little more inappropriate and the look in his eyes was very different than the expression on his face. I could see that he didn't mean me well. So, I said in my head, "I am the child of the Most High God, and Satan and His demons are NOT allowed to speak to me!" And, you know what? The man got right behind me in line at the store and stood very close to me (uncomfortably close), glowering in my direction, and HE NEVER UTTERED A WORD!
I walked out of the store knowing that the man could not hurt me for his power had been cut off. And he was SO MAD at me, but he couldn't do anything! I could tell you incidents such as this forever! One thing is for sure, Satan HATES to have his bluff called!
But what I'm trying to say is, we don't war against flesh and blood, but against powers and principalities and heavenly forces of evil! We are in a spritual battleground, and we have to take it there to fight! But we have the MOST HIGH GOD on our side, and we are HIS! And your son is HIS!
So, when the demons start talking to you about all the evil in this world, tell them that they are NOT allowed to talk to God's chosen! How dare they even try! They are not allowed to call you or your son "victim", nor "addicted" nor "sickness" nor "death", they are only allowed to call you and your son by the true names of the PRINCE and PRINCESS that you are. You are the CHOSEN ONES OF GOD, BELOVED CHILDREN.
Does this mean that nothing bad can ever happen to you? No, but if something should happen, you'll be able to handle it. God will be there for you, and He will see you through. But these fears are stealing away the joy your should be feeling now, so try stopping them at their source.
And when you first start doing this, be warned. Satan will not be happy about it, and it might get a little worse before it gets better, but just keep telling Satan that he isn't allowed to talk to you. Also ask for God's Mighty Protection during all of this. Here is one last example of something that happened to me when I first began doing this.
I was about to go into a WaWa store, and before I went in I prayed to God, and said, "God Most High, I am your child. Satan nor his emmisaries are allowed to even utter a word at me. Please, do not even let them speak to me." So, I go into the WaWa, and there were several men (about 5 or 8) in the store standing in various places shopping. And do you know what happened? As I walk in and pass them by, each and every one of them turn to look at me with such awful, glaring stares! Each man is facing me from wherever he is standing and glowering at me! I honestly felt like I was in a horror movie! I calmly walked through the store, got a fountain soda, and got in line. One man came up behind me and stood so close to me that his body was TOUCHING mine, and when I looked up into his face, he had an enraged look in his eyes. I turned back away from him, paid for my soda, and walked out the door to my car. NOT EVEN THE CASHIER SAID A WORD TO ME! No one uttered a sound the entire time I was there.
I silenced Satan and he was MAD! And he let me know, but he couldn't speak to me! Satan doesn't have power over God's elect, except if we give it to him. So don't. Protect yourself and your son, and you'll be filled with the power that rose Jesus from the dead, and not with fear. And you'll be able to enjoy your time with your son, and focus on him NOW, and put those fears out of your mind and heart forever.