First time posting, please help!

Josie
Hi, me and my husband have been ttc for almost 2 years. I had the implant in for 3 years and just never used conception after. I never had a period while on the implant and have only had 2/3 since. I have seen my doctor and all they can say is your weight is the reason. Now I know I am over weight but I have known people who are larger than me conceive. And now they have told me that because 1 of my hormones is higher I have PCOS, the specialist said usually I wouldn't say that but because you haven't had a period the I believe you have PCOS. My last period was in December. Keep doing tests but all negative. Has anyone else had this experience?