Have you been feeling a little, well, unfulfilled lately? Has the temperature in your bedroom gone from blazing-hot to arctic-cold? Can you even remember the last time you and your lover reveled in the aftermath of a great, mind-altering romp?

If you answered “yes” to any of the above questions, it could mean your sex life needs a boost. And if your sex drive is suffering, your relationship may suffer, too. But you can’t solve the problem unless you’re actually sure you’re having one. So, first things first: You need to determine whether your limited libido is just a rough patch, or the sign of a serious, permanent problem. Here are 10 red flags to help you figure it out.