Well fingers crossed that first lot of antibiotics do the trick, essbee.
Have just remembered about you giving blood for the first time on Friday, that won't have helped with the light-headedness either - in fact tracking through that thread I came across KATG's post about her passing out afterwards due to low blood pressure - is yours very low, did they check?
Take it very very easy, make sure DS knows that you are really poorly and have to rest and he has to help!