My acne wasn’t too bad, I’ve been taking it for 4 months now, but my side effects are awful. Should I stop taking it?

The first 3 months I was taking 30mg once a day. This past month I am taking 20mg twice a day. I had pretty moderate acne. Since they upped my dosage to twice a day, I have had such awful side effects, even worse than when I first started. I even took time off work because my back pain was so bad. I am prescribed to take another 2 months. I even missed my window to pick up my medication so I have to start the whole process over again if I actually want to pick it up.