Re: White film on my tongue and bumps on the back
I'm going to guess it's thrush. The pictures you see of it can make it appear awful, but these are usually the worst cases they're showing you. It's very common; people with asthma can get it from their inhaler, babies get it from their formula, etc. Sometimes antibiotics can cause it, but if you had the sore throat first, then the sore throat was probably from the thrush as that's one of the symptoms.
It's not a big deal to treat, your doctor will simply prescribe liquid Nystatin for you to swish around for about a week. It will probably make it disappear the first day but finish the bottle as it has a tendancy to come back.
Take care....and don't worry about it, it's very common.