Did these symptoms arise with a strange feeling of having been 'somewhere' for 72 hours, whereas everyone else tells you that you were in bed all the time, along with a sensation of having been subjected to weird medical experiments by funny little grey men with big black eyes and long, spindly arms?
Nothing to worry about, girl, you've been abducted by aliens; happens to me all the time, or so 'the voices' keep telling me........................
Seriously though; it's already been said but to emphasise:
Rule No.1 = Go see an optometrist and even back it up with a second opinion for peace of mind
Hope it all works out OK.
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PS. Before anyone else says it, I worry about me ALL the time!!