Hi, so my period is due in 2 days. I have PCOS, which is well controlled with 1000mg of metformin. Periods are 28 days. I have hideous heartburn, struggling to swallow a cuppa!! Weird feeling down below, like full feeling. Peeing a lot!! Mild cramping, not severe like normal. Nipples are sore. Pregnancy test done 2 days ago were negative. Is it worth testing again? Or waiting, is this just PMS? I had unprotected intercourse several times with my partner days 9 to 15 in my cycle. Gosh, this is driving me nuts!! Any advice please?