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Health, Safety and E-Smoking
As already suggested, if the symptoms are severe, or don't subside quickly, by all means see a doctor. If they are just an annoyance, and you're pretty sure it is directly a reaction to something in what you are vaping, you could try to "debug" the problem.
Eliquids consist primarily of nicotine, PG, VG, flavorings. Too much nicotine can cause rapid pulse, headaches, etc., but that doesn't sound like what you're describing.
I've run across people with sensitivity to each of the other elements -- PG, VG, and flavorings. Some people will develop heaviness, rashes, other symptoms from PG (or too much PG). Others run into the same things with VG. Others run into these with certain flavorings, in some cases they just cannot deal with any artificial flavorings or colors, while in others they may be sensitive to, say, cinnamon.
Perhaps try just vaping a bit of VG mixed with distilled water, to see if that makes the symptoms go away. Plain VG is readily available -- Glycerin USP Skin Protectant at a CVS or Rite Aid, the ingredients should only list Glycerin 99.5%, a 6 ounce clear bottle of it should be in the bandaids area; distilled water is $1/gallon in a grocery store, just mix about 80% VG, 20% water, and see if that vapes okay for you. If this works (although not so satisfying, since it has no nicotine or flavoring), then go for the 0 PG organic elqiuids, or at least try a PG liquid from another vendor (since it might just be the flavorings).
Good luck!