Wtf!!

So I just announced to my partner that I am pregnant and he goes to tell me that him and his mates are throwing a party at our house on Saturday night. Is it right to be pissed off? It's not a party for the baby, they are going to be drinking, doing drugs, having girls around...like I just found out I'm pregnant I don't want to be around this!! I told my partner that I will go to my mums for the night of the party because I need sleep and to not be around that stuff. I only had a miscarriage 6 months ago and I'm terrified right now and the best he could do is tell me that him and his mates are throwing a party at MY house!!!!!