Would it bother u if your significant other made everything sexual

me and my bf have been together for abt a year and a half we have a kid on the way and I’m just not in the mood. My nipples are so sore he grabs them i tell him to stop then does it again, he then always asks to have sex or anything sexual while we are watching a movie cooking doing normal stuff then I say no and he’s like please and I’m like no and he will keep saying please. It really bothers me I just wanna do stuff without him making everything sexual