is this rape?

When I was 15 or 16 I experienced head for the first time, it was fine so the second time me and my partner met up he did it again. It was uncomfortable and I felt all of a sudden too exposed, I said stop and tried pushing him off but he held on to me tighter and pretty much pinned me down. I was a little scared but have never been one to freak out over something I thought was minor, but I knew I didn’t like this so after finally kicking him off he said “but you didn’t even cum yet.” I think about it to this day and it’s one of the stupidest things I’ve ever heard. It haunts me occasionally and I’ve never come to a decision whether it was rape or not, it’s been bothering me for a while. I know it’s not huge but at that age I thought I could handle everything and just being in that position is a little scary and I haven’t been 100% comfortable since.