So I'm 2 weeks and 1 day late for AF. I've taken 5 tests in the last 2 weeks ( I know I should space them out more but it's driving me crazy!) and they've all been a bfn. I've had the symptoms on and off like cramping, Lower back pain, nausea, etc. I'm not sure if it's mental or not but I feel I may be pregnant! How common is it to test negative when your 2 weeks late for AF?