It can be normal, because the baby is starting to get bigger and they don't have enough room to move around. If you worry drink some juice, because sweets make them kick more. That's good you count your kicks. If you're really worry please call your doctor or nurse. They will good you the right advise on what to do.
My friend had this once. She went to the e.r due to the fact that the baby wasn't really moving. When she went she ended up delivering that day! Doctors said if she hadnt she wouldn't be holding her babygirl that day. Theres ALWAYS room for your baby. Call your doctor. If they dont answer quick enough go in.