In terms of comfort & discomfort, what are some differences between 1st & 2nd trimester?

Ellie • My first baby due Thanskgiving ❤️
For all the ladies who've had their babies or are in your 2nd trimester:
What are some big changes to your body, good or bad, that you noticed between the 2nd trimester and your 1st?
I'm in my first tri and have so many digestive issues and nausea. Just wondering what are some nice things to look forward to in the second. Are there any things completely specific to the 2nd that you don't experience in the first or third? Pleasant or unpleasant?