Anyone had this before? I've got 2 kids but prior to pregnancy my period was like clockwork - every 28 days! Since having my kids my periods have been abit sporadic but has somewhat become regular so I was able to anticipate it more (23 days, 25 days, 28 days but no more than that). It has now been 33 days since my last period. I've taken 3 cheap Asda tests, 2 in the AM and all negative. Wondering if I should buy a more expensive test but don't want to waste the money...anyone else had this?