Confused

Iv been getting migraines and headaches along with severe back pain. My head feels full and heavy sometimes and other times I feel dizzy. I’m cramping and my emotions are unpredictable, I keep having depressive episodes and major panic attacks. I’m not sure what is wrong with me, I feel like crying 24/7. I’ve gotten sick twice (not close together but two weeks apart) And I don’t have much of an appetite. Any advice? I’m 19.