2.75 and walked some

Went to gym to do 2 miles but did 2.75! I wanted to go further, but I started getting a cramp under my boobs and couldn't breathe because of it. I think it was gas. Also, I wore leggings that I bought last summer and they kept sliding down my butt. Very annoying. Extra annoying because when my leggings slide, they take my underwear with them. It's very awkward sticking your arm down your pants while running at the gym to try and pull your undies back up. Guess I'm glad I got my new under armour leggings. Need to do laundry though. I really want to run 5 miles this weekend. Feeling discouraged