So my SO said he wants to spend the afternoon/night together since we never have a day to just…

So my SO said he wants to spend the afternoon/night together since we never have a day to just relax. Well we get home and he said he wants to go say hi to the neighbors and that he wants me to come. I tell him there smoking weed over there and the smell makes me sick....so he goes anyways. Then comes back 10min later and tells me he's going to go on the tub and asks where his swim suit is. By this point i'm pissed and trying to keep it together. I find them for him and walk away and he's all happy go lucky and I go to the bathroom and he walks in and is like can you put sun screen on my back....such babe why not. I start to put it on and I snap and go off and he starts to snap back which pisses me off more. So I walk away and go take a shower and then go for a drive for. I'm sorry but I absolutely hate this shit, I think it's so disrespectful and makes me feel homicidal inside. Having pregnancy hormones makes me a very angry person....