Don't know whats going on :(

Hi folks.I am ttc since a while. I have pretty irregular cycles lasting anywhere from 23 days to as lomg as 56 days. Found out 2months ago that I have PCOS. I weigh pretty normal plus have my sugar levels well under the limit; unlike most of the cases with PCOS. I had my last menstrual period on 20th April this year. We BD'd from CD13 until CD18 and I also got a strong positive on opk on day 15. Shortly after I began to have symptoms such as tender swollen breasts, nausea, feeling tired and dizzy , strong metallic taste in mouth which is very much unlike me. I took a couple of hpt's , all negative. I had my qualitative bloodwork done - negative again.Had light bleeding for 3days a week later than my most probable period date. I still am having strong symptoms . But unable to figure out what is going on. To regulate my cycles , my obgyn recommended provera. However I have a strong gut feel that I could have conceived so reluctant to take it for a while. Never have I ever felt so low :( Any advise/ suggestions most welcome.