Prenatal vitamins

Jen
Hi All,
​I've been taking the same prenatal vitamin since July, I had a blight ovum and D&C in August. And during the last week, after I take my vitamin with lunch, like always, I've been really nauseous and a little dizzy. Any guesses? Could i be preggers? AF is due around the end of the week per glow. I've also had this dull ache and sometimes a pain near my right ovary (especially when i go to sleep, I sleep on that side). I'm more than a little gun shy about taking the test again. 
​Jen