Hashimoto's Hypothyroid and Pregnancy

I am 29 and was diagnosed with Hypothyroid at around 16 y/o. Just recently I was told that I have Hashimotos. I was never diagnosed with it before because my previous doctor never tested for it. I am currently on 88mg levothyroxine and unfortunately my thyroid isnt returning to normal. My doctor raised my dosage to 100mg. My fiance and I have been trying to conceive for 4 years and nothing. He had a varicose correction and I've checked for endometriosis and PCOS everything came back negative. My question is, any ladies out there who have conceived naturally and successfully with the conditions I have? I just need some hope. Thank you in advance.