Pimples on the body. Me some solution.

Hi. From past 8 to 10 months there are pimples on my body. They are not ordinary pimples and they are not many. First at the beginning it will be small in size then day by day it grows bigger in size . it pains a lot. It will be for 10to 15 days on body. Then it goes. Then again after 15 days it comes in some other place on the body. It came on my leg then on my face and now they are on my hands. When pressed it the puss came out and blood also. This pressing I did on my body where ever pimples have come. It pains a lot and after pressuring we feel tired. I showed to my family doctor and he said that this is due to some bit of insects. He gave some medicine but it didn't stop. Then I went to some other doctor he said that it is a allergy. Really I am worried. Kindly give me some solution . thank you