HELP - Hair loss question related to Thyroid?

Hi, I have a question regarding hair loss and hypothyroidism(slow thyroid) that I would appreciate any ones help and input. I am 27 year old male now and have been on levothyroxine for my hypothyroidism since I was 12. I have always had a full head of hair until I got a haircut about 3 months ago. After my haircut, my hair was insanely thin and I still have a bald patch on the side of my head. I wear my hair up and all over the place(messy look) and it was totally obvious. Up to this point there were no signs of my hair thinning or loss on general. My doctor recently increased the dosage on my medicine to 175. He initially said my levels were fine, but then increased my medicine anyway? Also, looking at recent photos from a friends wedding you can tell my face was very bloated and skin very white. Can anyone give me some insight on there experiences? When and how long should I expect before my hair grows back? This is horribly stressing. It hasn't seemed to approve yet maybe just a little but that could be in my head. All of this happened so suddenly. Also, male pattern baldness does not run in my family.. Help!