Anal sex without protection, is there any risks of bacterial infection ( I`m not talking about stds)?

Hi,
I have to disagree with rylons, that an enema is actually not recommended, and should only be advised for use by your doctor. (Enemas and douching can actually create a risk for more infections).

You can read more about how to have safer anal sex at the Go Ask Alice website (run by Health Educators at Columbia University).

There are possible infections and risks associated with anal sex for the recipient, but I am not sure about bacteria getting inside your partner's penis...some bacteria will be on the outside of his penis.

The risk for infection for you is from the possibility of tears, since the rectum and anus are not self-lubricating. It is highly recommended that you use a water-based lubricant liberally, and a condom would be a good choice; it can help make anal sex easier (penis can slide in) AND prevent any bacteria from getting on (or entering, still not sure about this one??) your partner's penis. I hope you reconsider, and choose to use a condom for these two reasons (condoms are good for other uses, not just preventing STDs/STIs!).

Go Ask Alice recommends two books:
For more information about anal sex, check out The Ultimate Guide to Anal Sex for Women by Tristan Taormino, as well as Jack Morin's book, Anal Pleasure and Health.

I am just curious as to why you are more interested in anal sex rather than vaginal?
The most likely problems arising from anal sex concern infections. Infections such as genital herpes and genital warts can occur at the anal opening.
Inflammation and infection can occur in the rectum.
Tears can occur in the anus itself and cause bleeding and hemorrhoids. A rare, but serious, complication after anal sex is a perforation in the colon. This dangerous problem requires hospitalization, surgery to repair the hole and antibiotics to prevent infection. A colonic perforation will usually cause fever and severe pain and pressure in the abdomen.
Anal sex has many pros, and many cons.
First for the pros. Anal sex CAN feel very good. Your anus is connected by other muscles and skin to the rest of your genitalia, whether you are male or female, making for heightened and different sexual sensations. Anal sex also is a way to have sex to avoid pregnancy.

Now the cons. Anal sex is the #1 method of spreading most STD's - AIDS, herpes, genital warts, etc. And by #1 I don't mean that it is the most common way to catch these things, but as compared to all other sex acts, vaginal intercourse, oral sex, etc., anal sex creates the best situation for transmission, because of the likelihood of tearing skin and tissue when you have anal sex. It can also REALLY hurt. You have to be very careful, and move very slowly at first, or else you can cause a LOT of pain for the person who is being penetrated.

Some people clear the rectum with a small disposable enema before anal intercourse. Because the rectum contains infection causing bacteria, anything (fingers, objects, penis) that has had contact with the anus should not subsequently be in contact with the vagina or mouth until it has been thoroughly washed.