Ovarian Cyst?

Back in December after an internal scan the doctor had informed me I had an Ovarian Cyst about 5cm but not to worry because they naturally disappear. The cyst st the time was causing me some pain at the time. After a miscarriage following the end of that month I haven't had s period until this month as a matter of fact I've had TWO but that's down to being on and off hormone pill because they give me migraines (always use a backup method too tho) anyway since my period ended at 27th of Feb I've had a dull pain in my left had side of my abdomen which fluctuates of pain I've been getting terrible head aches feeling sick and bloated. I've taken 3 preg tests over the past two weeks to rule out that possibility but what do I do regarding this pain? I had really heavy discharg like water and my left breast is incredibly hard.