Nessa, try one of those snake things. They sell them at Home Depot, and they're very inexpensive. I'll see if I can find a pic of one.
And AFTER you get the problem resolved (whether it's by a plumber, snake or whatever), get a hair trap for your drain. I bought one from Walmart for $1.99 and I haven't had a clog since. I never realized that my hair sheds enough in the shower to build up in the drain, but it does. I used to get clogs at least once every 3 months or so (a full bottle of Drano usually worked for me), but I haven't had one since I bought that hair trap.