To check if im pregnant.Im almost positive that im pregnant since i have all the same symptoms that i had from my son but i had 3 negatives adn the same thing happened last time i was pregnant..I had all false positives for some strange reason then one positive.So im going to get a blood test.Do they send it to the lab and then get the results back later or do they run it right there?Like prick your finger or something and check it?