almost 3 month anniversary.

ek0513

I have been on this journey for almost 3 months. i have only lost 18 lbs, and i expected to lose a lot more by now. I started at 185 lbs, and now I'm at 166. i don't know if that is a decent amount of weight loss for the amount of time i've been doing this. it was my understanding that you could lose 10 lbs each month, which would mean i am 12 lbs below where i should be. am i doing something wrong?