Milky discharge with sour smell

my Discharge is so milky and watery and feels like a period. At one point in my life I think I had bv due to a new sex partner cause I was virgin but me and him had it and I guess he chemistry didn’t mix with mines right so it caused me to have bv and I didn’t treat my bv and it keeps coming back and back I think now I have pelvic problems cause I be getting cramps. But yea I can’t wait to see a doctor in June I really think I got a std though I’m scared asf