I've not commented so far on this, but here's my thoughts on it for you and I really hope that you manage to find some peace.
From what you've written in other posts it seems that you reallly wanted your baby and hoped that someone would be very supportive of you and lead you to feel that you could cope and keep it. As it happened people were not supportive of you, probably because they genuinely felt that your future life would be better without a child at that particular time. I don't think anyone did anything malicious to advise you wrongly or to hurt you.
Ultimately it was your decision and you made it, and now that is something that you will have to live with, and not allow it to affect those around you (because Octavius is right, it will lose you friends and destabilise your life) but more importantly you must not allow it to affect yourself so deeply.
Looking at it logically there is nothing you can do to reverse your decision. It's done, there is no going back. There will one day be a time when it's right for you to be a mother, so try to embrace your pregnant friends good fortune and look forward to that time for yourself.
I know from bitter experience ( not in this particular regard as I'm male) that if you hark back to the terrible things that happened in your past, then your life never improves and you drive people away.
You have the rest of your life to look forward to, don't focus on this one very sad decision you made in good faith, just accept that you did your best under difficult circumstances, forgive yourself and everyone else and move on with your life.