iI am a 29 y/o female, and 3.5 weeks ago, I bled after sex with my husband. 1 partner, and I had a baby 11 months ago. yesterday I noticed a brown discharge when I wiped, and I have had some cramping. I had a period 2 weeks ago, and I am on birth control, 1 week into my new pack. Today I noticed a greyish discharge when I wiped. Could this be bacterial vaginosis?