What do I do

Hi Reddit

So for some context I’m 20 ( f ) and my husband is 21 ( m ). Like an hour ago I wanted some fun time, so I took us up to our room and started doing business. 10 minutes in we switch positions and he stopped having the blood flow ( iykwim ). I asked him why and he blamed it on everything under the sun. “ it was the rubber “ “ maybe I wasn’t into it “ ( when I asked about that he said his thing wasn’t, not him…) etc. this has happened before. Idk what to do or think..and I can’t help but think the worst. Thx