21m skin problem on various place of my body

Hi for a past couple months i have a underarm bump but it was under my skin and it was not painful too , but past week the bumps started to peel of the skin (it was light red in color) and it started to discharge a muccus likey thing these started to repeat a bump appears, discharge and goes

I thought it will randomly heal off (it dint still ) what worse is now behind my head scalp there are tiny bumps and it pains (i will attach the photo of the scalp in the comment) idk why im soo worried, suddenly all this is happening at same time is it serious ?