Well, C., with all three of my pregnancies I had the same thing happen. It was during the later part of the pregnancy, and due to the extreme pressure from the added weight. My doctors, all three, told me they were a form of hemroids(sp). One of them told me that they would be gone when I gave birth, and my body went back to normal. They did....mostly...but when I had my period.....SOMETIMES....they came back a little bit. They are not something that you use the medicines for, however. Mine hurt at different varying amounts, so when they became too painful, I used a cloth that was as warm as I could handle, and held it to the area, and it would help some.
What we women must go through to bring our little ones into the world...it is worth it all when you see those precious gifts from GOD! Good luck, and dream about that sweet baby boy!