Confused!?!?!

Monica

Yesterday during dinner I felt very off; lightheaded, kinda nauseous, fuzzy. This morning I got a sharp pain in my left side and while in the shower I noticed darker stops on my nipples/areolas and when I pinch my nipple I get some white discharge,like breastmilk. I have a 2 year old and haven't breastfeed him in over 6 months and never had this previously. I've been having headaches daily and lots of dizziness. What could it be?