Trying for a baby number one

 Me and my husband have been trying for our first baby since November. I was pretty confident about possibly being pregnant this month as I have had tender breast for about a week and a half feel like my boobs have swollen and are larger. I have never had their symptoms before my period Before. I have had what I would probably say is considered morning sickness, feeling like I want to throw up but not for the past 24 hours I am supposed to start my period.  Either tomorrow or on the 16th I am using two different apps. To track everything is it a possibility to not get a positive pregnancy test until after you missed a period.