How To Cure Dry Itchy Pimple Causing Pain In Underarm And Stomach?

I have a pimple in my underarm, and the area is dry, itchy and there is odor. the pimples pop up, get hard and painful , burst and recur every few weeks. I ve had this for a month now and haven t visited any dermatologist. now, i have a similar one on my tummy, but its just painful, lumpy and is bleedin.