blood work

so a couple of days ago i posted about not feeling very well and thought maybe it was my BC of something. i was really nauseous, dizzy, and feeling crappy all around. so i changed my BC and im still feeling this way. i called the dr. office and they said i should come in for some blood tests to see if i am prego. KINDA NERVOUS! what were your symptoms of being prego??? THANKS IN ADVANCE LADIES!