BM drama

So yesterday me and my boyfriend got into a fight over his children's mother and now I haven't heard from him all day and the stubborn person I refuse to reach out first but naturally I miss him since we have been dating we don't go a day without talking to each other and I need some advice.... Ok so my SO has 2 phones one he really uses when he's having issues with his main one but anyway his BM came to drop the kids off he was in the shower his main phone was in the bathroom so I guess she did the next best thing and took that one and left I'm at work and get 2 text messages one from the main line and the other from the one he barely uses I see the second one first it says hi so I text back and say hi but then I get the text from him saying if yu get a message from my other number don't answer I say too late I thought it was yu he says I knew she took it! So the other number is texting me acting like its him telling me I'm happy but I have to be honest I've been cheating with my bm I'm sorry I love yu so I tell him I knew this would happen he still has feelings for yu and you should have put her in her place a long time ago but now it's my turn so I let her know I know it's her I tell her to stop being childish come at me like a real woman don't play games on my phone so I guess she gets mad starts taking shots your head is gone we just stopped talking last month I'm pregnant you just tell him to take care of his unborn child!!! And at this point I'm boiling over mad she's texting me all this crap and he's mad because I'm entertaining her crap but I'm at this point like had you done it it would have not gotten to this point I wanted to beat him and her ass!!😡⚔ don't get me wrong I love my man I trust him but it's her that I have the problem with she's disrespectful and his I'll handle it my way attitude makes me so mad!!! We have known each other for 4 years we tried to be together before but we were not ready then I moved and he wrote me on IG in December 2015 and told me he couldn't do it he loved me and couldn't go on knowing we didn't try and see where we could be I needed to hear that my grandpa passed in February and he was right by my side and had been here since and the love he shows me is amazing we've been talking about marriage!! I wanna spend the rest of my life with him but this situation had put a bad taste in my mouth.... Ladies what should I do? Do yu think I should text or call or should I wait?