It could be your meds or it may be situational. Perhaps you could start making a goal list for each day.
Make the list simple and easy, go for short walk, call one friend, whatever you want to put on your list. It is for your eyes only.
My list was so simple when I was at my lowest point, I had 1. Get out of bed. 2. Wash hair 3. Wash one load of clothes. So you see you can check off each goal as you achieve and if you don't meet your goal that day, move it to the next day.
Many days my goals had carry overs.................such as make dentist appointment. Keep taking babysteps and as far as meds, I would discuss your meds with your Pdoc.