Diet Pills to aid in weight loss

So I was given progesterone because I didn't have AF in the month of Feb. had it in March and got blood work to see if I ovulated. I got the results today and they said my count was really low and I didn't ovulate. 😔 I am about 283 lbs and I should be around 140 to be healthy. I was 220 when I convinced my first son. We are having trouble conceiving out second child. I'm sure it has to do with my weight since we had no problem before. They want to put me on Clomid to help with ovulation. I think I would rather try to loose weight first before starting meds. Thoughts and help on what worked for you ladies???