So I came off the pill in November. Fell into a pattern of periods every 40 days, lasting only 3ish days. Had a major episode of extreme panic disorder and anxiety one month, for put on antidepressants and it's gone, then I was a week early, I am now over due by a day or two, feel anxious (but just been through an upsetting event that I don't want to discuss as it'll possibly reveal my identity to any friends etc on here) and also have had headaches for 2 weeks and this week feel nauseous like the type when you've got flu/bad cold!!! Should I see the g.p?