Good Evening (but in the UK is good morning)
You are mentioning several things here in your post. The ones that stick out to me-
Anyone may be critical of others w/o the existence of underlying mental health diagnosis. If when this occurs to the extent that interferes with your daily functioning or interactions with others it may be helpful to acknowledge that one's high expectations, perfectionism and the tendency to over analyze can be minimized. Yes, medications can help with compulsions or obsessiveness as well as with learning techniques to help oneself. Examples - cognitive techniques, realizing that no matter what feedback you receive from others (you will always perceive it subjectively) If some of those people this occurs with are in your immediate family (see if you or they may be interested in a short term family counseling)
Your meds are in the SSRI category (serotonin re uptake inhibitors) If you have a true Bipolar disorder (SSRIs in some instances can trigger a manic episode) Have you shared your concern with your doc about your belief that you may be Bipolar? Of course, the physician will have to diagnose that (if you're unhappy with the diagnosis you in now way have to accept this. There is the option of a second opinion. Does Bipolar run in your family? That is one of the things to report to your doc.
Please find a way to be re-evaluated by a physician (if the diagnosis is the same) at least you would have something to work with.
Another suggestion is- if you feel that the meds are not helpful (doctors always can change, modify dosages or try something else)