Sex life has lost spark

I've been with my husband for 13 years, married for almost 5. We now have a child together. Lately he's been hunting that's he's getting a little bored in bed and that it's always the same. Last weekend we had the worst sex we've ever had! Luckily we were both able laugh about it but he then told me "he can't do all the work" and I "need to learn some moves".

I just don't know what to do. Many positions also hurt me since delivering my baby so I'm limited. How do I spice things up?