Day 16 (cycle) not well. Help

This past week I’ve been feeling nauseous and dirrahea. with each day getting worse and increasing the amount of time it lasts. Today I’ve been feeling light headed, fainty, light cramps, headaches.🤕 are these signs of successful ovulation?? Does anyone know. I remember 1 month I got exact same symptoms and found out I was pregnant. Which made me think it’s successful ovulation. I sware I haven’t been ovulating since that pregnacy the ended in miscarriage. Any idea on what it could be would be great!! I can’t get into a doc until next week. 😪