Have you looked for a therapist that works on a sliding scale? It's based on your income, most mental health centers offer this service. I agree that you can also talk to your regular doctor, they may be able to help some with some meds.
There are also breathing exercises that may help, taking slow deep breaths and try to release some of the pressure when you exhale, that sometimes helps me. Also distracting your mind by doing something like doodling on paper or other activities can be helpful for some.