AF due.... Whenever it wants really

So, I have missed 3 projected periods. (OV dates all over place!) to my knowledge tho as I ovulated on 28th(ish) I'm not due until next week. I'm 9dpo today I believe. I am symptom spotting to the hilt!! Today I am so tired, and I've not done a lot. I feel sick, so sick, but then within minutes so hungry. Like as if I've not ate for weeks!! Feel hot, headaches, cramps biiiiiiiiig cramps! And lots of other 'pulling' and pinching sensations in my belly. Lots of gas. Terribly constipated and my hair is falling out! Nice! Fingers crossed for bfp next week.