Hi Worried, Look if you wash after you should be ok dont forget that you did pump out your sperm, so by doing that then things cant go the other way, and when you wash, no doubt you sqeezed you p***s out at the same time, and did some remaining sperm come out, if yes then you OK.
Good Luck
thanks for all the comments, now im wondering would i get a urinary tract infection from the feces?
Hi Worried, Look your ok most men who have anal sex with there girls/wifes its not planned so we just do it, its a spur of the moment thing, and getting some feces on your penis is ok and long you wash straight after, if fact your G/f will love you for doing that, it shows your a clean guy and it also means you can both clime back between the sheets for some real sex, because she is now very much in the mood for going again.
Now as Zs has pointed out about having enamas, but that tends to make things a little clinical.
So just carry on as you are, be spontaneous, your g/f will love you for that, and love you even better because you just dont mind pleasing her the way she likes when she wants it.
Good Luck
Obviously this is going to happen sometimes when you have anal sex. If you're both completely STD free there's literally nothing to worry about. Just make sure you clean up well with soap and water, take a shower etc. Try doing an enema or something similar before you have anal sex. Or if you're really worried, just use a condom.