I was diagnosed with Oral/genital herpes about 3 years ago. I never experienced an outbreak or had open sores on lips or genitals. About a year ago I started to get this blood filled blisters, they are the size of a dime, they are very painful and so uncomfortable. I asked my doctor in the last visit and she said it might be a lymph node, I didn't have the blister at the time so she couldn't take a sample. I know how a lymph node feels like and I have also gotten them outside the vagina but these blisters are different. I tried to compare herpes outbreaks with it but they don't look the same. I also noticed that I get them a few days before my period, maybe a week before. I'm also sexually active, I'm in a relationship and he is my only patner. Could this be an infection? Does someone have an idea what's going on with my body?