Do another test as soon as you can to put your mind at rest.
Do you still have pregnancy symptoms, such as sore boobs or anything? Anything obvious?
Normally, if anything bad had happened your symptoms would stop.
I have a personal experience of this when I had a m/c. I had a bleed and in my panic I did a test which turned out to be negative. Also, I'd had really sore boobs, which had stopped being sore that morning. I don't want to scare you but if you still have your symptoms and you aren't bleeding then please try not to worry. If anything was wrong you would probably know by pains, bleeding or something other than a pregnancy test iykwim.
When I went to see the midwife she told me to ignore the tests as your hormones can fluctuate. If you still get negative results with another test, get yourself down to casualty and ask for a scan or a blood test to confirm everything is okay. Don't worry about being thought a drama queen, you need to have your mind put at rest. Tell them you think you are over 7 weeks (you are near enough) otherwise they might not scan you.
Good luck. I hope I haven't made things worse, but I have been in this position (except with bleeding as well).
