when i was at the end of my last relationship i felt like how your feeling now. time heals all things! i didnt see a therapist at the time, but i seen one afterward from the after effects.
if you dont have insurance. you should be able to call one of your good friends and tell them how you feel.
try to take some SamE herbs or something else that helps your mood. though they helps with mild and not server depression, it's worth a try.