Feeling pretty slutty...

A few nights ago, my SO and I had really hot sex.  He lasted for a while but after he was done, I asked him to go down on me. He was using his hands as well. After a while I could tell he had all four fingers in and I got really turned on and started humping his hand. Naturally I opened more and his whole hand slipped in. He basically fucked me with his entire hand and I completely was grinding back. It was one of the hottest experiences I've had sexually. Here is the problem. Ever since, I've been really self conscious and feeling dirty. Has any one had a similar experience?