Boyfriend wants to visit family for thanksgiving

My boyfriend and I live together. I’m pregnant now and with COVID I’ve been trying to be real careful. His mother had been sick ( not related to COVID) this entire time. I never denied him to go see his mom at the hospital because she was most likely pass away, and she did at the beginning of October. He went over to see here that last weekend and all I asked him to do is just stay with family don’t meet with friends. Well he did anyway, a week later he got symptoms and tested positive. I also got tested but I tested negative. I decided to do the quarantine with him just in case I did actually have it. This messed everything up for me because I’m doing an internship and I wasn’t allowed to come back. I now have to make up those hours some how. Now he wants to go back to his grandmas for thanksgiving and his moms funeral. I said we can go to the funeral but we aren’t going to be mingling with his family or staying over because where they live has been put back into lockdown. The cases are rising and he wants to stay there, it wouldn’t be a problem if his grandma wasn’t one of these people who believes it’s not that big of a deal. She goes about her daily activities like nothing, visiting friends and traveling. His uncles also work at a hospital and nursing home. I tell him that if he goes and doesn’t come back the same day to just stay there and that we’re done. He doesn’t take anyone into consideration when makes decisions that can literally kill someone else. Am i overreacting?

Edit: I did not say he couldn’t go to the funeral. I said let’s go and come back. His family and him don’t even call each other, nor does he talk about any of this to them or me. He has all ready tried to contact friends from there and one of them had to tell him no because they are on lockdown. He’s making plans to hangout with friends before even getting there, if it were so important for him to be with family he would take those three days to be with them not hanging out with friends to smoke and drink. His main focus is who can he see, not his mother has died. This isn’t the time to gather with friends. Especially if they live in a big city that has been put on lockdown because of COVID. This has been going on since the beginning of entire COVID problem. He was going back forth to his family. He would say he was going to see his mom, but would be at wildwood having fun. He would go over and lie about hanging out with friends who he knew had family who had just tested positive. He then came home and gave it to me. This has affected me because I’m in an internship and lost 50 hours of school because of his selfishness. I had plans to move back into my parents so that we could look for a comfortable safe apartment before the baby came and now I live an apartment building infested with roaches and no lights in the rooms except the hallway. Like WE live together in our own apartment. We should be able to consider each other when it comes to stuff like this. People aren’t doing thanksgiving because of how COVID is going back up.