I would hold off testing if you can 

 If it comes up negative it will be a big disappointment and could still be a false neg this early stage... 
I tested last week and got a few pos hpts then two days later got AF so obviously it was a chemical preg... such an unnessessary disppointment if I hadn't tested early I wouldn't have got my hopes up IYGWIM...
Fingers crossed this is the month for you!!! and it's a sticky sticky one