Bump size confusion

Jay
Hi 
I am pregnant with second child due in August. I got my girl 5yrs ago when I was pregnant with her I had huge tummy people use to say you having twins.(I did had bit more water) This time I am not that huge tummy and I am 24.5 weeks, is it ok ? 
just worried about it.
Any advise, pleas.
Thank you 🙂