Confused with my body?

Hello all you wonderful ladies, I need your help/advice badly. So I had a miscarriage in April 2017 and had only one progesterone induced period in September. My next progesterone induced period should arrive in next five days.

Coming to my problem, my weight is growing like crazy specially my belly it looks like I’m due in a month. I grew from 146lbs to 163lbs over the past nine months. I feel depressed, zero motivation and no zeal to do any workout. I’m concerned why my belly is growing so much, anyone been through similar phase😞😞 is it just my hormones acting up or something wrong with my uterus😞