Sometimes in afternoon and evening when my tummy is full and I try to take a deep breath I am unable to complete my breath. My tummy swells in size when I inhale deep and I have to let go my deep inhaling half way. This is usually not the case when I am empty stomach or half filled tummy. Am I breathing incorrectly or can there be any other issue that i need to be worried about?

Ecg and x-ray chest is advised to the patient.