Thanks for your question and concern. After going through your problem, all I can say is that there can be different possibilities that are responsible for the development of the bumps on your penis. There can definitely be a chance of having some STDs in case you have had unprotected sex with your female partner because unprotected sex has various risks involved with it. You need to get your blood tests done to make sure that you are not having any STD. Another possible reason for the development of the bumps on your penis can be Folliculitis which is the result of wearing the tight clothes or some other trauma because it leads to the hair follicles friction. In case of folliculitis you don’t have to undergo some medication program because all it requires to cure is wearing some really loose clothing along with some warm compresses. It can also be resolved with the usage of some topical or oral antibiotics such as Mupirocin that is really beneficial in getting the Folliculitis cured. There are many STDs involved with the unprotected sex these days that easily get transmitted from one person to the other. Though it is pretty possible to cure such diseases that get transmitted to the partners after getting involved sexually but precautions are a better way to keep you away from such diseases. You need to take proper care while having sex and if you come across any strange sign or symptom then you should consult your doctor immediately so that it does not increases if have started developing. Good luck.