Missing your evening meds could be contributing. (I mean, you're taking them for a reason, right? So if you miss a dosage, it's not doing what it's supposed to do for you.)

What's helped me pull out of an apathetic funk is to schedule my day. Sit down with a piece of paper and write down what you're going to do...hour by hour. Then stick with it, even if you're not having much fun. It at least prevents me from going back to bed or nesting in the house all day, and eventually the stuff that I find fun gets to be fun again. Good luck.