no wonder you are breaking down with having no support from anybody. my family went quiet for over a month and no one would speak to me after they found out about my loss (we were waiting for 12 weeks to break the news but didn't have a chance), and after about 5-6 weeks of that crap i stepped up and had a massive fight with everybody and got my support. told them they have no right to disregard, ignore, diminish and avoid my pain just because it's uncomfortable to talk about it and they don't know how to help me.
have you tried to contact your ex regarding this?
and as far as your current bf goes... i'd face him too and let him know it is important for you to share those kind of feelings with him. and if he can't love, you're better off alone. i can understand if your EX, the FOB had problems facing the subject, as there is always lots of guilt, shame, and pain involved when it comes to unplanned pregnancies, and i know many guys who ran away and still had that on their consciousness 10 years later... so if he's escaping and running away because having children is a scary fucking drastic change of his life plans, this i understand.
but i can't empathize so much with your current boyfriend, who doesn't have that weight of his chest and still fails to show any empathy with you and give you any support. this i find horrible.
you don't need any additional non-coping and non-supportive people around you, the mc alone is devastating enough. i wished i stepped up to the people around me back then and stood up for myself and told them: hey you know what, you're acting like empathy-less assholes. i deserve better.
just that my self-esteem and self-love were totally destroyed after my mc so i couldn't. but later i did, and now i do.