Weight gain from fertility meds!?!

I am praying I can blame this ridiculous weight gain on my fertility meds. RE has me on letrozole on days 3-7 and HCG trigger. I have done this for 3 cycles over the past 4.5 months and have gained nearly 15lbs!!! I know I could be to blame for some of this but for the most part I am eating much healthier and exercising more. It's been painful to even look at myself, I don't know how much longer I can do this... Anyone else in a similar boat?