Do I need to use condoms if my boyfriend might have an STI and not know it?

If my partner and I have been monogamous for three years (and I was a virgin before we met) and my partner tested negative for the HIV virus (twice, about two years ago, with a six-month gap between the tests) is it safe for us to use a birth control method other than a condom? That is, are there still any STDs that my partner might have without knowing it, that we should be worried about, even though nothing whatsoever has seemed wrong with either of us for three years and my partner has had several regular annual physicals in that time?


Why do I still feel sick after drinking weeks ago?

I am a 23 year old female who enjoys a few glasses of wine but, in my opinion, doesn't drink more than the average college student. A few weeks ago, I had quite a bit to drink and haven't felt the same since. I am dizzy, forgetful, confused and my liver is very tender to the touch. I have continued to have a few glasses of wine a couple nights out of the week and it seems to be the only thing that gets me back to feeling "normal." Is this a normal way to feel or should I be concerned?


Does being a lightweight drinker have anything to do with my liver?

Does the classification of a "lightweight" with regard to alcohol consumption imply anything about the liver? In particular, is there anything abnormal about feeling tipsy after only one beer (vital stats = 155 lbs., 6 ft.). I know my family has a history of liver problems and I have in the past drank to excess on many occasions. It has never taken much to become inebriated and now it takes even a little less. Should I be worried?