I got a full test done for different sorts of STDs and everything came back negative. However, I still see red spots on my penis head that were not there before and a couple new bumps at the base of my penis. Can a person have STD symptoms, but still end us getting a false negative test???
Yes. there is usually a window period for each type of STD. the window period varies, but during that time you can contract a disease but show no symptoms, and some tests can't detect the disease until it is fully incubated.
Yes you can have a false negative and also a false positive. Tests like these are rarely 100 percent accurate.