Silly question about jeans getting tight

beforesunrise

Please don't laugh too hard at my question...I'm a first timer and nervous...

My jeans are just now getting too tight at 12 wks. That in and of itself seems normal. However, I didn't realize this until after I was out and about for the day. My silly question is...can wearing too tight jeans like that hurt the LO? It was only for a day but since I'll be in this transition phase for a little while now, I want to know if I need to be more careful. Thanks!