I need advice…

Basically me and my partner live together but he hasn’t been here all week he’s been round at his sisters literally constantly he gets in between 1-3am and disappears again once I fall asleep. It’s really annoying me rn usually I don’t care what he does but he knows how much I’m struggling jn. This pregnancy isn’t exactly going well and I’m so scared because of how much I’ve been bleeding (I have been checked but I’m still scared, I’ve been told it’s gonna happen again) I’ve been told to rest as much as possible but I’ve been left to deal with everything. I’m trying to get my house in order while caring for a toddler and dog (who I’m struggling to walk because of the pain I’ve been in recently). I feel so bad for my fur baby she does still get out for the toilet just not proper walks. The most help I’ve had from him this week is when he comes in for less than 5 minutes and says he’s gonna help me then goes back round. All he does is bitch about his sister and friend because they’re round there full of drugs. I’m getting annoyed being stuck with everything so I told him I’m going to take our daughter out for a bit so I can get outta the house (hinting that I needed him to make sure the dog was okay) and he said he can take our child so I can get out for a bit and get a break but I don’t really want him watching her alone anymore. He took her for a couple days last month down south to see his mum and long story short his sister took a lot of drugs down there and he went in a mood and spilled them. My daughter found one (she didn’t take it) but I’m still so angry about it for many obvious reasons but the main one being he kept it from me. I only found out because of his mum. Also don’t want him watching her alone because everytime he has (while at home) in the past he takes her round to his sisters and his sister ends up watching her. I’m also still very pissed off with her aswell she knew my daughter was there. Tbh I don’t even want anyone watching her anymore that’s my baby. If she did take it would he have told me then? Or would I have found out after I lost her?