I am currently on Duloxetine as well. She prescribed me xanex to go along with the Buspar.
Medications in general affect individuals differently, so one person's experience won't match the next person's. That particular medication has a very poor track record of working, but maybe you're one of the few it will help. This is a drug that supposedly works quickly, as opposed to purer antidepressants that take 4-6 weeks to start working, but as it does have some effect on serotonin it might take awhile to work. Increased anxiety is a common side effect of any medication that affects brain neurotransmitters. Sometimes it's a start-up effect and sometimes it's a long-term side effect. Only time tells us that.