I know your pain. I was queen of the irregular periods! SO FRUSTRATING for testing!

For this little spud at the moment, i waited 20 days to do the test ( i was so OVER getting bfn!). Have you been charting at all? You should be able to tell your normal LT phase from that which would be a good judge of when to test (for me, no matter how varied my periods went, the LT phase was always 14 days)

I think you may be justified after 2 weeks to be getting your symptoms. Are you really tired? Feel a bit bloated? Anything else thats strange for you? even in a positive way?