do u think its time to get a new doctor

I have been ttc for 8m now all my doctor tells me is I shouldn't and I should weight and I'm to over weight.... I 140? 5"1 and 20year old married. I have not had a period 4m but I am also irregular and my gyno helps me more she has been trying to help me find the right meds to help regulate them.. even when I was on brithcontrol(pill) I sometimes didnt get a period. my family doctors makes up all this stuff that I have pcos,(I have had 4 test done both my gyno and my doctor have looked at it and my gyno says I dont) high blood sugar, once again I have had the retest it 2 times and both doctors say different things.... and thyroid same thing with that... and my gyno has checked it and had found nothing wrong with me? tell me I may be over eight my like 5 lbs but I look healthy and I eat healthy.... what do u think. I like the way I look I think if I lost any more woght I wouldnt have anything on my I would just be bones and skin