I have had a white discharge off and on forever now lower backpain achy feeling headache now it looks like a blister in my pubic hair same partner yr8?

Get eval.: You have many symptoms form a d/c, to back pain, to a blister in your pubic area. I am not sure if these are related or not, but they certainly warrant an exam which should include testing of your discharge, a urinalysis, and a good back exam to start. Hopefully that will shed some light on a diagnosis and the proper treatment can provide you with relief. Best wishes.