Red patches on my arm in three spots.
Its been a few weeks now and it wont go away im starting to get concerned everything i look up seems like it may be skin cancer.
very difficult to give an opinion without a picture. Are they raised/bumpy? Sounds like angiomas which are quite benign ,but to get a proper diagnosis do see your doctor
If they are itchy,spreading in size or number,weeping, bleeding,crusty then it is imperative you see a doctor
Please dont worry even if your doctor suspects a skin cancer. Many of them can be easiy removed