I would have to say no negative side effects. You MIGHT take longer to have an orgasm during intercourse, and when you do have sex again it might be a little painful and you would be a little tender afterward. But abstinence is great.. more power to you! Look at HockeySharks great aunt, lived to be in her 90's!! At least you know you'll be at a lower risk for cervical cancer!!!...nuns don't get it!
Me too,I'm single and had no sexual activity yet,I wonder if it can have negative effects?
My great Aunt was a nun who lived to be in her 90's.
I would guess there are no negitive effects.