I need advice.

I was talking to this guy for about a week. Well we met this past weekend & stayed with him at his house. Well we had sex the first night & everything was normal & good. He was being so sweet etc. He cummed inside of me, he got fixed so he can’t have kids. Well the next day the inside of my vagina smelt really weird, like a fishy musky smell. I thought it was just left over cum inside of me, I told him my PH was knocked off because of him cumming inside of me causing me to smell weird, he said he still wanted to have sex the next night so we did, of course it smelled funny the whole time & he dropped me off at home the same night because he had work that morning & now I have barely heard anything from him. But before he was all about me, wanted to be with me & see where things went between us. I think he quit talking to me because of how my vagina smelt after he cummed in me the first time. I’m a very clean person & never have infections. I’m so embarrassed that it’s possible he stopped talking to me because of that... I told him I smelled weird down there after he cummed in me but he said it didnt matter. Please I need advice I’m so embarrassed..