Is there a bath or a shower handy? Rubbing a tablespoon or so of salt onto the solar plexus and then either soak in the bath with it, or shower your whole body and head as you shower it off imagining distressing energies detaching and going away from you down the drain. Go for a long walk somewhere safe and with some greenery around if you can find it, or hang out in a cathedral, maybe? When in doubt, stomp and shower it out! And drink plenty of fresh water.