I think you would have gotton sick by now from the pills if it was going to happen. I had a reaction to penecillan the first time i had it, it was rather severe and i believe it probably caused my emet. That happened within the hour of taking it. Turns out i am severely allergic to it, so allergic i cant even come into any contact with it, ie.giving it to children. Any antiobiotics can upset your tummy, but i reslly do think you would have been unwell by now, probably after the first lot you took. X