Hi so i have a feeling i may be pregnant ! although we did use protection but it kept sliding down ! ive been to the doctor and taken a pee test and it came back negative so he sent me for a blood test but to test why im tired thats all ! but for the past 2 weeks ive been constantly tired 24/7 ive been sleeping for 13 hrs straight im always feeling weak ive been vomiting every morning and also to the smell of some foods .. ive also been craving foods that i have never liked in my life .. im always dizzy and nauseous in the mornings and late in the afternoon and nights i have constant headaches ! and really bad lower back pains and really bad mood swings as well so i just want to know if there is a possibility of me being pregnant even though we used protection ?