Help!!

My baby will be 4 months on the 10th, today made 14 days since he pasted stool so we went to the doctor. She was very shocked and ordered an abdominal x-ray, told us to give him oval before meals incase his stomach is full of gas, ordered a blood test and sent us to the hospital for a nurse to give him a suppository.

He got the suppository but he didn't really pass any stool, just a little stain.

Anyone has a similar experience? She said maybe he's not getting enough food (he's exclusively breastfed). I feel so sad knowing I might be starving my baby.

He's happy and playful and is gaining weight well. So I'm so confused.