Pregnant or sick?

Hali
The past 2 weeks or so I have been getting this white milky discharge. Then the past couple days, maybe 4 or 5, I haven't been feeling all that great on and off. Then yesterday morning I woke up feeling extremely dizzy and it continued all day and is still happening. (It's 3:30 in the morning, and I can't sleep because of it.) My period was also supposed to start saturday. It's 3:30 am on Monday now and no period yet. I have a pregnancy test, but is it too soon to take it? And are these even signs of pregnancy?