AliBaby, I would definitely block this person on Facebook and make your privacy settings as tight as possible.

I think the hypnobirthing stuff would be good for you as it also teaches you how to use your breathing to relax and slow down your heart rate etc. I use it to help me get back to sleep at night when I wake up stressing about things.

Babies are very resilient to though - women give birth to healthy babies in all sorts of situations, going through famines, wars, terrorost attacks, floods - you name it. So don't stress too much about your bub, I'm sure everything will be fine!