HELP!

I gave birth to my stillborn son in 2017 at 36+5 weeks pregnant. I am currently 34+5 weeks pregnant with my daughter (same father.)

The stress of what happened last time is getting to both myself and my partner and we are going through a bad patch at the minute. Neither of us like to talk about it, and not really giving each other much time. I have depression and struggling extremely bad at the minute and today I’ve just found out he is on a dating app talking to other girls.

I don’t know what to do. I just feel numb.