6 weeks pregnant - HPT now negative

Hi,

Just wondered if any ladies have had a similar situation and everything has been okay?

I'm 6 weeks + 0 and due to my many health conditions I'm sooo scared of miscarriage (I've had two previous). It's been around a week and half since my first faint line test, Ive had some cramping the last few days and not being able to sleep and I mean literally not closed my eyes for two days. Anyways I managed to find a cheap hpt hidden away and decided to test again this morning. However the test came up BFN. I'm now worried sick and don't know what to do. Shall I wait a few days and see what happens or see if I can get in the EPU for a scan?

Thanks in advance.