What would blood filled bumps be? i have a blood filled small bump on my upper leg.before i knew it had blood in it i poped it.that was a few months ago.now its back.what could it be. it don't hurt

This : This is challenging to answer without a clinical examination so i would recommend you see a dermatologist. These could be angiomas, angiokeratomas, pyogenic granuloma, molluscum, moles, lesions of vasculitis, a blistering condition, papular dermatitis, or many other possibilities. Read more about many of these conditions at the link below. I hope that helps a little.