I found out my girlfriend is ignoring me, should I feel angry?

You never HAVE to feel angry; anger should be temporary and for good reasons. This may not be a good reason because it happens with friends/close friends. Every once in awhile, something may pop up & it'll seem like they are ignoring you, but it isn't always the case, k?

First, you need to figure out why she is supposedly ignoring you.  Anger will get you nothing.  Two wrongs do not make a right.  Is there anyone you trust that may know why your GF is ignoring you?  Did she get bad info regarding you?  Did she just have a bad day?  Bad grade?  Problems at home?  Problems w/a school chum? Did someone set you up to look bad to your GF?  Hope this helps.