Quicker heavier breathing

Jenna • expecting 9/9 🌈👶🏽🤞🏼miscarriage 5/20, CP 8/20

13 wks here and I’m a teacher. I’ve been staying active and hadn’t noticed anything with my breathing until today in class. I was speaking during a lesson and sounded like I had just run up stairs. Anyone notice any changes in breathing? I haven’t gained much weight, just like two pounds at this point and have been staying fit. Is this a normal change? I didn’t picture this happening until further down the line.