Is there any possibility that you are becoming allergic to mushrooms? My Mom is allergic to them and her symptoms are that her body attempts to purge itself of the offensive material by every means at its disposal (in her case, seemingly as violently as possible). Your nausea and nasal symptoms sound like the beginnings of allergic reaction.

Other than that bit of unpleasantness, I am glad to hear that you are out and about and enjoying yourself! It really is great to get out and relax and socialize.

*hugs*