About 2 weeks ago, my boyfriend and I were having sex and basically I was done, tired and ready to stop, he on the other (we weren't using protection) was trying to get as close as possible so I could blow him and he could get off( it's what we usually do) anyway I said "I can't do this anymore" he still didn't stop, he was very sorry apologized and told me he assumed I was just saying that because even though I'm not very good at dirty talk I still like to try and he thought I was just trying to be sexy. Long story short, I'm not really comfortable having sex or having things done to me, I enjoy giving and still do but even if it feels good to have him go down on me or anything I'm still uncomfortable. Is there anyway to help this??