toilet gettting clogged

I use chemicals and prescribed tissue but it keeps getting clogged. After I empty it Ive noticed air bubbles out when i fill bowl with water and flush.

Not quite sure what you mean but something similar with my old Jayco.

After a period of time after starting from a drained tank, I would get a "burp"(bubble of air) when flushing and after a bit it would plug. A rod pushed down would dislodge the mess and no problems after that. Happended every time out.

What I think was happening, when starting out with very little water in the tank, "things" would hit the bottom of the tank and start building up. It built up faster than the water going in. Although there was enough water later, the pile was already there and the need for the rod. After that, "things" falling into the water would dissinigrate(sp), the pile never building up again.

Maybe right, maybe wrong.

But it is the combination of the other replies:

WATER WATER WATER and

PYRAMID