What Causes Excessive Urination Along With Diarrhoea And Dizziness?

i have not been feeling well for a couple of days i have been peeing alot had diarrea felling tired dizzy and light headed and a funny feeling in the bottom of my stomach not olny that i had sex a dsy before my period and then after that i am not due for my period untill febuary 3 could i be having eary signs of being perghant