Feeling really crappy

Zoe
AF due on Saturday and feel really crappy - I'm self employed and had an ill day today and tomorrow which is really rare!  Feeling sick, dizzy, hot, sore, swollen feeling (not looking) eyes, generally aching and almost period cramps but I don't usually get early! Is this just me being ill?! And if there is a chance I'm pregnant any tablets etc I should avoid? Thanks x