Help please...

....s...

I am not due my period for another 8 days I am on day 20 of my cycle. I had cramps in my stomach for a week now they cramps have moved feels like period cramps but I am not due my period yet. I am feeling sick and bringing sick up when food is around me and I can't sleep I feel constantly tired but I can't sleep. I feel bloated and starting with headaches. Could this be the start of implantation?

Hope someone can help...