9dpo bfn

Nicola • Married. 29 years old. Mmc at 11 weeks July 2015 and mc at 4+3 weeks Nov 2015. Pregnant with baby girl due 30.07.17 ♡♡
I've got really bad AF type cramps. Creamy cm. No other symptoms. Has anyone felt like they were going to get AF but got a bfp instead? I tested today at 9dpo (dpo is a guess as think I felt ov pain) and got a bfn :'( Not sure when AF is due as periods are irregular x