Yesterday morning my hubby and me indulged in anal sex. After coffee and going to toilet , he wanted to have anal sex since he got a full erection thinking it. His penis is nearly 7 when erect. After licking my ass hole for 3-4 minutes he applied fairly good amount of KY jelly to his penis and my ass hole. He usually does it slow, but yesterday, after initial slow thrusting, he started to pump it in rapidly. Then after some time he will take it out and again thrust it in. After , about 4-5 minutes, I got a vague smell of fresh shit and I told him to stop and he did not stop and started very fast thrusting and in about 1 minute he ejaculated inside me. When he took it out his penis was fully covered with thick shit. Afterwards I went to toilet and he to bathroom for cleaning. When I was going to bathroom several loud farts have come out and even in toilet I was farting. What is worrying me is whether he will get any serious STD due to this. Also, why the farts and leakage of semen from my anus for a long time which makes me highly embarassed ?