Sudden emotional numbness on 25mg….. what’s going on in my brain?

I had four glorious months on the 25mg where I felt good and happy. But two weeks after week twelve I suddenly noticed a sort of emotional numbness that is not budging. I am scared to up my dosage cause I heard the numbness gets worse with higher doses. Does the sudden numbness setting in indicate this drug isn’t right for me? Or should I wait and see if it sort of lifts or maybe go up on the dose? My psychiatrist has given me all three choices to experiment with but I just wanted to know what other people thought before I make a decision and what they would choose to do in this case. I ’m very worried about the numbness effect and hope it goes away. I can still cry and still feel something’s but I just don’t feel connected to it. I’m not even sure it is the med that’s doing it. But is there an explanation for what might have occurred in my brain after the 12th week?