It's not fun anymore!

I need advice! Like bad! 
My SO and I have been TTC for a while now. And like I'm sure most of you know, sex every other day (if not everyday) is what will most likely get the job done! 
In the beginning it was fun, but now it's like a chore! 
For a couple that doesn't have sex but maybe once a week, it's kind of a big deal to have sex so often. 
We both want this really bad but everytime we need to BD its more of a lets hurry and get it over with situation. 
What can I do to spice things up? I want us to WANT to have sex. Not do it just because we know we have to! 
Anybody?