Just catching up,
@ellieb123_xo so sorry you've had such a rough time of it so far, please do make sure you lean on us and find someone you can trust in your private life and open up to them even if they hadn't asked. Sometimes people just assume you'd rather not talk about things like that so they just don't ask. I would also mention it to your midwife to see what support they can offer with mental health etc.
@Laughalong jeez what a shit situation. Tricky one as it's from pre-meeting you and he clearly thought this other girl has accepted and was fine with him not being involved so just thought it has 'gone away' to an extent, almost like he could pretend it wasn't a thing. I'm glad you're able to find the strength to work through it though, and the fact that his attitude towards being a parent is the total opposite with you is so promising. I would block this other girl now if you haven't already and let her be some other poor blokes problem if she's going to behave that immaturely to you.
Life really is never easy is it but I guess we all just have to remember the good times outweigh the bad.