I need helppppp!! I need answers & opinions!!!

Ok so my for the past 3 years period had been VERY usual... sometimes it'll come in 3, 2 sometimes even 5 months. So for the past year I've been taking pills to get my period every month but it never comes on the day it supposed to. So for the month of August I took my pills my period came. Then BAM it came 15 days later! 😩😩😩 Buttttt it came on it own, without me taking any pills... so 2 days after my period was done I start feeling myself very nauseous while eating food sometimes right after I'm done eating! It would happen in the morning time, lunch & dinner. No matter what I eat I get nauseous. Even if I eat a snack in between meals still nauseous off of a snack. It's been 6 days since this has been happening.... can anyone tell me what the heckkkkk is going on???? Someone help me?? Point me in the right direction??? I need some opinions about this.... my doctors office is closed until Tuesday 😩 so I can't even talk to anyone until then.....