Swollen glands & tonsils in neck

Kadie • :)
I've had swollen glands and tonsils 3 times already this year. I've been on antibotics again this week. Can anyone tell me why I could be always getting this? It's such a pain because I get to where I can't even swollow normal soft foods. Plus I'm beyond tired of the antibotics because they all make me very sick to my stomach. Any ideas would be great?