Hi, I will soon be 18 and have recently (about 2 weeks ago) noticed that I've started producing a thick brown vaginal discharge. I don't usually get this much discharge and it hasn't stopped. I was also due for my period about a week ago and that hasn't started yet. My period are usually regular and I dont notice much if at all any discharge before my periods. The discharge smells a little but not that much. I'm not sexually active at all but I had the new HPV vaccination done around 4 weeks ago and also one today. There will be another vacination coming up in May. Do you know what this could be? I've also had stomach pain for a few seconds around once every 2/3 days. The pain isn't that bad and is very similar to a stomach cramp I get before my period but my period hasn't started so I don't know. Do you know what this could be?