PLS HELP ASAP

My bf and I were having sex and after he finished we realized that the semen was towards the bottom on the condom but still inside. He said that he wasn’t as hard as usual during it and had a “halfy” so it probably made its way downward. The skin around the bottom of the condom was completely dry but I am worried that there may have been some leakage i didn’t notice. Does anyone think that there was leakage or did it just sit stuck at the middle and bottom? What should I do?