I did as Nikita suggested and did some surfing....found a very informative site that sorta breaks down info from the CDC (Centers for Disease Control and Prevention). http://www.talksexwithsue.com/condoms.html There is also a direct link to the CDC site if you want to read the info with really big words!
I think Dododecapod gave some great information, but this link seems to say that condoms are not highly effective except against HIV.
As for oral sex, if a person has an STD that is a transmitted via skin to skin, then it doesn't matter if they cum in your mouth or not! Just the act itself can give you the STD, as many STD's do thrive in the throat and mouth. Couldn't find a whole lot of info on oral dams. Sowwy!
I'm gonna put the link to the CDC up here as well. Okay for some reason it's not letting me do that.....so....when you go to the above website for info....click on the link to the CDC....in the top right hand corner click on Health Topics A-Z, click on S and look for Sexually Transmitted Diseases. Click there and this should take you to a page where each STD is listed on the left of the page and you can research it for yourselves to see how it's contracted and how to prevent it. However Dododecapod is correct about the best way to protect yourself.
Also if you want to test yourself for HIV....there are some places you can go on the net to order a kit...really...but you have to prick (no pun intended), your finger...and most kits will cost you money....okay...that's all the info I have for ya today kids! Hope I haven't ruined everyone's weekend!
If ya can't get the link to work for ya, please forgive my ignorance when it cums to stuff like this and just copy and paste it! It really does have some good info!![]()