Anyone experience this before?

Hi Girls, Wondering if anyone has any advice-my AF was due last Sunday but no sign, did a test and got a BFN. Have had a few twinges etc but nothing, Then this morning I had some spotting, I've never had this before so did another test and got a BFN. I'm so confused really dont know whats going on, anyone experiences this. Wish AF would just arrive now so I can get it over and done with!

Hey there hope your ok? Are you on the pill? It may be that its not strong enough for you. I would go to you GP and maybe prescribe you a stronger one..