Too scared to take a test!

It is 3 days until AF is supposed to pay a visit, but for the last 3 days I've had every early pregnacy symtom you can get I think. Lower back ache, pain on the one side in my pelvis, hot flushes, nausea, increased appetite... My partner and I have been TTC for 12 months now and not fallen pregnant. I'm too scared to take a pregnancy test as I'm worried it will say negative AGAIN :(