Is there something wrong with my Instagram?

[kaylee]

Ok so I was looking at this app clef Instafollow to see if anyone unfollowed me. It said no one unfollowed my but about 500 of the people I was following weren't following me back. I looked at the list but they were all people who were my friends and people from school who I knew were following me. So I went onto my Instagram to look at my follower and following list. Under my following list it was some people I knew, but not all the people I knew where following me. A lot of other accounts who were following me (fashion, tumblr, ect). But none of my best friends were listed as following me. Then I looked at the list of people I'm following. There were a bunch of accounts I'm following but only a couple accounts of people I knew showed up on the list. I went to a couple of people from my schools page to make sure I was following them, and it said I was. It just wasn't appearing in the following and follow list on my page. Is there something wrong with my account, like should I get a new one?