Idk how to feel about this

I've been kind of stressed out because my partner said he feels obligated to marry me now that I am pregnant, a surprise pregnancy. I've told him from the beginning no didn't wanna get married just because we are having a child and that's not something we should focus on right now because we should focus on our baby but he said he feels obligated, Like if it was a chore. I don't feel obligated to marry him I feel fine I feel good and that we will be together forever but after that conversation for some reason I just want my space from him and I now I just feel like there might not be a future there 😢