10 days till period, and this happened⚠️⁉️

So I’m super confused😅 this has never happened before. But it’s been going on for 2-3 days now. It’s super light and smells weird. It’s nothing like my normal period. I’ve been having intense pelvic pain, my boobs are swollen and super veiny, also my lower back hurts like crazy. I haven’t been eating a lot, because nothing sounds good. Please help!