Help!!

So I'm 8dpo today. Yesterday for about 2 hours I had really bad sharp pains in the left side of my lower abdomen. I have heavy white cm. I've had headaches for the past two days. Sorta bad gas and my boobs are starting to get sore. Thing is, I'm due for a period 21 days from now. I O'd early for some reason. Not sure what's going on right now... please help lol