K. - Oh, sweetie - I am so sorry. How lonely you must feel! I don't have a similar experience, but I can tell you this:
You need to take a pregnancy test. Today. There could be a million reasons why you don't have your period, and only one of those reasons is pregnancy. If you are, indeed, pregnant, then you can begin the process of dealing with that, but until you know, you are creating your own turmoil. You can't allow yourself to deal with a situation if you don't know what the situation is. Even if you ARE pregnant, a huge weight will be lifted just simply knowing. I promise.
Second, God knows what he's doing. If you're pregnant, it's because you should be. It's never a mistake.
Do you know what is the best thing about your post? You never once said you didn't want a baby. You are very concerned with the logistics of it, and others' attitudes toward it, but never did you say it made you unhappy to think you might be pregnant. So somewhere inside of you, this is okay. And that's awesome. If you're okay with it, everything else will work out.
No one is ever really prepared for a baby, are they? And there are days when I am still convinced it's a mistake that I am a mom - that I'm not a good enough one and someone's going to figure it out and take away my son. But you know what? I am a mom. And you are, too. And you're a good mom. And if you're pregnant, you're going to be a good mom to your second baby, too.
Go get a test today and take it. And accept whatever the outcome is. If you are pregnant, you don't have to tell anyone yet. Just know for yourself. And give yourself time with it. Find that place inside of you that is happy for a second baby. Make peace with it. When you do, all that external noise and chatter will fade away and you'll be strong enough to face it.
Good luck K. - S.