The fact that you are going through menopause can be a very big factor in that means you should see your gynecologist to help you re- balance your female hormones. You seem to be relying on medications alone and in my opinion that is not enough. As you go through life source of your anxiety changes and some insight and understanding might help you quite a bit.
My mother has a similar situation. When my younger sister, 23 at the time, got married my mother lost interest in everything and wouldn't even go out of the house. It was really hard on everyone, and we thought she was just upset over my sister getting married and leaving home. This went on for almost a year. Come to find out, her meds. had recently been changed close to my sister's wedding. She also was in the early stages of menopause so her hormones where changing. The change in meds. probably would have been ok if not for menopause. So the Dr. looked into dosages and changed the meds. again. It took her about a month to recover but it worked. This may be a little off as I am not a Dr. and I am not sure of all the particulars of the situation, but I think I got it pretty close. I hope you can get this resolved for you as well.
Wellbutrin, though a good antidepressant, can increase anxiety. Paxil is designed to help both. You might try just doing the Paxil and see if that helps. By the way, I'm not the doctor.