Feeling so tight and sore!

I’m 25 weeks today and I’ve been feeling so tight in my stomach area. Getting harder to take deep breaths! I’m a bar tender so I run around all night long during my shifts and it’s getting harder and harder.

Bending down is becoming a pain as well! Can anyone ease my mind? This is my first baby.. I just want everything to be okay. It doesn’t “hurt” it’s just tiring and irritating because i feel like sore and yucky.. like I’ve eaten way to much or something!