sore penis!! advice needed

ok I was with the boyfriend last night and I had to stay at his because we went for a drink
he lives at home so I knew quietness would be needed he knew it himself so he made me a bet if I didn't succumb to his charms and give in to sex he'd bring me away for the weekend
he mostly did I think because rarely I get to stay over and when I do we rarely get sleep and both had huge days today and as well he knows just how hard it would be for myself!!
anyway I succeeded despite his begging and pleading in the end but everything else was done but we used some lube and it has left him with a sore and swollen penis today
im grand and it hasn't affected me at all (thank f**k) but the poor chap is in bits in work I told him its probably just because we were a bit over anxious on the foreplay but not sure what else to say to him other than try and get his hands on some sudocream!!id hate to think i broke his penis i love it too much
any tips before he goes to the doctors as TBH its a pretty embarrasing problem and i feel so sorry for him!