Side effects of duromine- sorry for the novel

I've been trying to get pregnant but I think it wasn't happening because I was overweight and was struggling to lose the weight and put off trying to have a baby. To help me kick start my weight loss my doctor proscribed me duromine 30mg. I had gotten my last period (two weeks ago) came a week early and wasn't normal so I went to the doctor and he did a blood test just to make absolutely sure I'm not pregnant so a BFN. I'm currently on my 5th day of duromine and two days ago I started spotting but stopped that night. Thought it was because i had sex for the first time in two weeks and it came back today but heavier. I've also been feeling exhausted but energized from my medication and also been urge to vomit and major dry mouth (think thats the medication, am drinking lots of water too). Should I check again to see if I could be pregnant? Or are they just side effects of the duromine? Or could it have anything to do with my ovulation?