SKBF,
reflexology, to me, is not a wicky wacky therapy and i am sorry that your experience has maybe put you off it.
if the therapist does reiki also, i can almost see why she may have been doing this although, having said that, reiki practioners are very aware of energy and respect it.
sounds to me like she didnt ground you very well and could indeed have flicked some of that negativity back at you (irritable, spinning head). imo, my treatments are for my client and as such, i make sure they are relaxed enough to ask me to explain what i am doing and why, in a way that they are comfortable with. (i mean no disrespect to your therapist, btw).
we all conduct treatments in different ways and maybe this therapist was not in tune with you and your needs. dont be put off... i'd try another one, perhaps go by recommendation. lok up YP, yell.co.uk or thomson. ask what qualifications they have (and insurance), perhaps how long they have been qualified, specialist field (especially if pregnant or contemplating it). hopefully you will feel right about a therapist by their responses.
best wishes
rosie