Bloating After FET- Is this normal?

Vivian
I had 2 embryos transferred via <a href="https://glowing.com/glow-fertility-program">IVF</a> and have become increasingly bloated. At the end stretch of the TWW, but I already have a bump!! I know it's not the baby, given "if" I am pregnant it would be the size of a tomato seed. 
So is bloating normal?? Any advice??