Advice?

My SO has been fighting with me a lot lately and last night after we BD I asked him if he could do something to help me out the next morning he got mad and said I killed his vibe we went to bed and continued to argue so I walked out of the room to go sleep in another room he came in and told me "it was over" like super randomly I didnt respond just went to sleep .... What should I do? Like who breaks up with there SO after sex? And he knows this is a hard time for me cause I lost a close family member around this time and we have been TTC for a few months now and I honestly feel like this month we did it ... I just feel confused and angry what should I do ?