Is it normal for my stomach to already feel so heavy all the time at 17weeks? I know I'm getting a…

Is it normal for my stomach to already feel so heavy all the time at 17weeks? I know I'm getting a belly much earlier this pregnancy, I was barely this big at 6 months with my son. I have more round ligament this time too. But I just feel like my stomach is heavy the past few days. Like someone strapped a weight to my stomach.