I have a cut on the inside of my vagina lips. It's a very small cut and it stings when I urinate. I have went to a GYNO doctor in July and have given blood to a local blood drive all came back good with no STDS. I was wondering why I got it or what could have caused it. The last time I went to the Gyno doctor I got on the implanon that goes in your arm for 3 years and I don't have a period. I just started my period (which is really weird) 3 days ago and I use pads could that cause me to have a cut that tiny?