I'm 19 weeks and just started exercising (treadmill on an incline) and spent most of the time worrying how heavy my belly felt. Do you use any support for your belly while exercising? Feel free to recommend your product!
I wore a support belt (don't remember the brand/name) when I ran sometimes. I liked it, but I had to be careful about how right I wore it. If I veil cores it too tight I would get crampy.