Ladies, help! Have you experienced this pain?

I’m just going to come right out with it, because I’m in a lot of pain right now! :(

My nipples feel like they’re on fire and are extremely raw feeling. I have never experienced this before and have no idea what it could be. I’m more than two weeks away from my period, and I haven’t been having sex – if that helps with information. It’s so painful that I can’t even have a blanket touch them. I’m tired and I want to go to sleep, but it’s too cold with no blanket. What do I do? And more importantly, what is going on??