Help advice

Hey everyone I'm having a problem with my relationship with my boyfriend he doesn't listen to how I feel I don't trust this girl that flirts I've only met her once he thinks I don't trust him coz I don't trust her but I do and yesterday we had a argument he said he thinks we should call it a day as he's had enough of the way I'm but when I try and talk to him about how I feel he just goes against me he's being very distance from me now and said about him staying out tonight and if I'm ok with it but I said it doesn't matter to me anymore and he dumped me yesterday he said don't start I don't know what to do plus my dad said if me and him split up coz of how he's treating me I'm pregnant and I'm the only one paid out for the baby he hadn't then he will make it hard for him to see the baby when she's born i don't know how I feel anymore what does anyone think please help me ?