Convinced af is on its way

Earlier in the week I would have said I think this is my month but since Sunday I have had af pains on and off all day and between 1-2pm I feel really nauseous but this passes after that time. I'm convinced my af is on the way tho an I just want it over so we can try again! I'm sick of peeing on sticks and seeing bfn! Im so bloated! just need it over now :( Period not due till Monday! :(