is discharge normal?

brianna • idk but i'm really lame
okay so the other day i was on Facebook and saw this post saying that discharge wasn't normal and that you should get it checked out. i have always thought discharge was normal and that everyone got it. but the lady that commented on the picture said that it wasn't normal and that she had never had it and showed a picture of her underwear that had nothing and said "if your panties don't look like this there's something wrong." and mine look like that, only because i wear panty liners to keep from it getting on mine. so is it normal or?