I am 15 weeks and these past 2 weeks have been the worst. I'm super tired all the time. I am throwing up alot more then I ever did in the 1st trimester. I can't even shower alone bc I get so dizzy in a shower or bath that I almost fall or cant get out of the bath. What could be causing this? I don't go to the dr until next Thursday and really don't want to go early, it's an hour drive and I scheduled my other appointments for that day to save a trip.