Katkins, you are not alone with testing. I was testing a week before AF was due and I even tested a day before AF was due and all negative. The month I got my I didnt test until the day AF was due and got a faint + until a week later, when the test was darker than the control line. So I know how you are feeling.

I say test otherwise you will be worrying more and more and you will test either way.

As for the diarrhoea, I have had it since week 5 and its awful.

Also, the only symptoms I had was a headache and sore bb before my faint +

Good luck and lots of