Pregnant?

Im 3 days late, been feeling sick to my stomach, a lot! Its like all day and gets worse after i eat. Hyper sensitive to smells and food. Super emotional, and breast tenderness....sometimes i get some symptoms before i start my AF. I have tested three times the first looks negative but i swear i see faint positive lines on the other two...idk if im crazy or not. The ladies at work say i am definitely preggers due to running to the bathroom 20 times a day and being super emotional. Im afraid to know for sure though because my last pregnancy, i miscarried. I dont want to get my hopes up. My boss wants me to be pregnant because she is having a baby itch and she is done having kids.