What should I do about super sensitive inner leg skin with welts on legs?

I am a 19 year old female and I am getting little bumps and high cysts on my inner legs and little bumps are all over my body. My skin is always ichy and i don%26#039;t know what to do. I am a water polo player, and the welts/bumps seem to get worse when i am in the water and when i take hot baths. I have tried shaving and creams but they seem to get worse. I hate going to the doctor and i was wondering if anyone had any similar issues or suggestions to make it go away and to help prevent the ichyness and cysts. Thanks|||GET SOME MEDICINES|||It probably gets worse in the water because of the chemicals but you are going to have to see a doctor to get the proper treatment. It could be a hundred different things.