I'm a 21 year old woman with white lumpy vaginal discharge (odorless)...I thought it was thrush but after two courses of yeast infection cream it has not resolved...I have never had sex, so can't have an STD...I get bad pain in my lower back and sacro-iliac region with my period and with ovulation though I don't know if this is relevant...I'm embarrassed to see a health care professional about this and don't know if I'm just concerned over nothing...

So far I have been extremely impressed by your service. I trust you with a question which I know many people share: Are whitening toothpastes detrimental to the longevity of one's teeth?

1) When you are at the gym exercising do you need to wipe down each machine that you use even if you are not sweating?

2) I'm looking for some helpful pointers you might have on the subject of health club etiquette (i.e., don't wear perfume because others will leave workout equipment wearing your perfume). I would appreciate anything you have to offer on the subject.

I am a 19-year-old male. Over the past three years whenever I urinate, my urine stream splits in two (one continuous stream and one stream which is basically drops of urine.) Is there something wrong??? I also have another question. My grandfather has prostate cancer. I was just wondering when I should begin checks for this type of cancer.

I was told by my dentist that my teeth eroded, due to consumption of too much acidic food. I would like to know what kind of food causes tooth erosion. Do you have a list of these foods?

I was having a conversation with my roommates about pop and coffee and we were wondering which is worse for your teeth, the pop or the coffee? And what do they do to your teeth when you drink them?

What causes fever blisters on lips and how should they be treated? Also, what is the difference between fever blisters and shingles?

I have a question for you about sex that may seem a little silly. I had a cold recently with a badly running nose. My boyfriend and I started having sex. While we were having sex, my nose stopped running completely. After we were done, my nose started running again. Do you know the reason for this?

I just came here this fall. Since then, my nose has been bleeding occasionally without any injury. My friend told me it was because of the dry air of U.S. Is he right? How can I prevent this situation? I also have a problem when I brush my teeth. My gums are always bleeding and not just a little!! What should I do? Thanks.

This week I'm getting my tonsils and adenoids taken out. I've never had surgery before and I don't know what to expect. Can you explain please?!?