Blocking people on Instagram?

[petiteairplane675]

I have a best friend who used to follow me on Instagram. I followed her too. But then we had a little argument. It was no big deal. But the next two days, my Instagram had a glitch. The glitch automatically un-followed a lot of people, including her. I guess she got mad that I un-followed he, and I think she blocked me. I press the blue button, and it says "following." But it only says it for one second before it turns blue again. Also, I can't look at her posts. At the top where it showed the number of followers and the number of posts, the posts say 390. But then when I look at the bottom of the screen, where it shows the posts, it says "no posts yet." Did she block me? Thanks for any help.