Clomid/metformin and overweight!

So ladies I've been ttc my #2 for a little over 16months (dd is 11years old). 4months ago found out I've got pcos. Been put on metformin. I was 270lbs but have lost 14lbs over last few months. My cousin gave me clomid to take days 2-6 of my cycle. I felt extremely depressed a week or so after taking them. Terrible stomach cramps etc. I know I shouldn't take someone else's medication, but when you're so desperate for a baby you'll try anything right? I don't ovulate so thought I'd try these.

I'm so desperate to get pregnant and find that I've been emotionally unable to accept it hasn't happened yet. I thought having had one I could fall again. This is so hard. I know loosing weight will help but it seems to be taking so long. I'm now at 256lbs and 5'8. Is there anyone out there with any advice or a similar story to mine? Xxx