Sex on period

Me and my boyfriend are in the middle of a heated makeout session and of course we're  touching each other and he slides his hand in my pants and I instantly say stop and he says you not bleeding since you coming of right I tell him I'm discharging and his response was so there's little to no blood and goes to take my pants off idk why but I just let him and the sex was amazing like I always hear the wet noises but this was more than the usual I mean it sounded like someone splashing water and I grew uncomfortable mind you I was on top he flipped us over and the more he went the more I started to feel into it. In my mind I was thinking is this blood or me I got disgusted and of course I clamped my walls down so that he could get his off and when he did he asked next time I'm on my period could we do it. Do I share my discomfort or pleasure him?