Y’all been told this discomfort your feeling is just baby squishing your diaphragm?

I’m 22 weeks tomorrow. Baby was measuring 14 oz as of Wednesday. When I feel movement I feel him way way low. So I have been feeling some discomfort. Tightness and pressure in my chest. Shortness of breath which is normal. Wasn’t too concerned but honestly it feels like contractions...except way up high. SO was freaking out so I called the dr and they said it was just baby pushing on my diaphragm. I just am having a hard time understanding how baby is THAT big lol. He wasn’t last week. And he’s head down.

Been feeling this way all day. I am at work so I can’t lay on my side. I’m crazy right? Just tell me I’m crazy and I’m fine 😂