Can condoms be used for masturbation? Or is that a waste?

I have a latex sensitivity, but would like to perform safer oral sex. Are lubricants on non-latex condoms harmful if ingested? I can't seem to find non-latex, non-lubricated condoms anywhere.

I've seen you have given so much great advice in the past I was hoping you could give me some. I always use a condom when I have sex. I don't seem to last as long as I want to. I was thinking of trying one of those gels or creams that make you last longer. Is this stuff safe to use with a condom? Could it possibly break down the condom, causing it to fail? Thanks for any help, Alice.

I live in Prague, Czech Republic — Europe. Before asking any question, I should tell you that I really appreciate your service. As for my question, I would like to ask you about the most common reasons for condom failure as a contraceptive method. I suppose that the most frequent one is condom breakage. But what are the others? I am especially concerned about pregnancy risk implied by the accidental transfer of sperm in pre-cum to condom by fingers while putting it on.

My boyfriend and I are having sex 2 days after my menstrual cycle. I am on birth control. I finish my cycle on a Saturday and start the new cycle on Sunday. We usually have sex on the Saturday night before I start the new cycle. Is it safe to have sex even though you have finished your menstrual cycle but have not started taking the pill for the next cycle?

I have recently gone to a Planned Parenthood STD Clinic. From what they told me, they tested for everything "curable" (i.e., they did not test for HIV, genital warts, or herpes). I know where to get tested for HIV, but my question is: are there tests for herpes and genital warts? What are the odds of someone having herpes or genital warts and being asymptomatic? I plan to use a condom during intercourse regardless, but must I do the same for oral sex as well? Is there any way of knowing for sure if someone is clean of STDs?