How do I know if someone blocked me on Instagram?

[Jasmine]

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.

[Hibah]

I know that there are apps that tell you if someone blocked you or not. But yeah she did block you because if you click follow and it says following then turns back it means she blocked you. The fact that you can't see her posts and it says no post also means she blocked you. Hope his helped.