MC RubberMallet: I'm sorry to hear about your bad experience. If the depression sticks around for more than a couple weeks, you may want to consider seeing a mental health professional, but you probably don't have anything to worry about.
While it would definitely be adviseable to stick with your gut on not doing anything for a while, I wouldn't be so quick to completely rule out smoking marijuana in the future. Get over your bad feelings from the bad trip, give it some time, and maybe try it (in much more controlled doses) at some point in the future if you're comfortable.