When I have sex or masturbate if any there's little cum, some times it's really thin and clear, and it doesn't shoot out too. Some times I don't cum at all and usually don't get much-any pre cum. I'm worried. I'm 16 and have been sexually active for a few years, I drink lots of water and typically have a good diet(Many sources say this is a diet related problem but I've tried everything)
Why am I having this problem? Should I be worried? What can I do fix it?