Doctor appt today - clomid and metformin

So I went to my ob/gyn today to talk about my options since I have pcos and we have been trying to conceive for almost a year. He said I could go on birth control and lose weight or try metformin and clomid. I'm already trying to lose weight..healthier eating and exercise so I really didn't want to do the birth control option! We are ready for a baby! I chose clomid and metformin.

He put me on clomid, metformin, and progesterone to jump start my period. I'm starting them tomorrow. Anyone have any suggestions or possible things I should look out for?