Is this kitten's belly abnormal?

This is ZoZo, an abandoned stray kitten we found when he was about a week and a half, he has been with us for almost six weeks now, lately i have noticed that his belly is rounded maybe a little big, I'm not really sure, so do you think that it's abnormal or am i just over noticing?
These pictures were taken after he had eaten.

Hello mahmoud, has ZoZo been de-wormed and vaccinated? Looks like he has not been de-wormed. He's showing a pot belly.
Bring him in to the vet and get him vaccinated and get pills for de-worming from the vet

No he hasn't yet. But he doesn't have any worms in his feces, is it possible to have worms without them showing?
I am going to take him to the vet tomorrow.
Thank you

Adult tapeworm segements are often found in the poop but young tapeworms and unhatched eggs will not. Cats can have other internal parasites that don't show up in the poop. Kittens are routinely given a dewormer treatment or two along with basic vaccinations.

What LTS3 is correct. You can check out this link about worms in cats :-

[article="31550"][/article]

http://m.wikihow.com/Check-Cats-for-Worms