levothyroxine

I've currently been upped to 100mg per day. I started taking 50mg and was on that for 3 months and it remained quite low. Less than .5, I'm a bit on the bigger side of normal range. And I'm wondering how you all take your pill. I read 30 mins before meal on an empty stomach? Can I still have coffee. My doctor simply told me to take it in the morning. Any advice as greatly appreciated, we are on our 15th month ttc, and I'm pretty sure it's my low thyroid to blame. Thank you!