I have these following symptoms overwieght, unable to conceive, heavy periods, missed periods. I have had blood tests and urinaliysis done that resulted normal I lost 30 lbs. and
My periods became regular but still have other symptoms plus gained the weight back is it possible that I could have thyroid problems.

Yes, it is possible that you have hyopthyroidism. Have your doctor do a thyroid panel to find out.

Have your doctor check you for polly cystic ovarian syndrome