Help please!

Me and my boyfriend have been trying for a month. It will be a year in june since I got my birth control taken out. My sisters also had this birth control, it took my oldest 2 years to concieve and my other sister a year and a half. I have a 3 yr old son. I am two days late, my breasts have been sore for about two weeks, and im very nausious. Usually my breasts are sore a week before I start. He bought a test but I am just scared of it popping up negative! Any help is very appreciated!