am I pregnant?

Hey ladies I am trying to figure out if I am pregnant my last period was February 24th and it lasted for 5days my periods are normally regular I have an app to help me keep up with my info because I have been trying to conceive for about a year now my nipples are tender and I sleep a lot !! Help me out what kind of mucus is this I took a test Tuesday3/28 and it said negative my period was suppose to come on 3/24 I'm just anxious could I be or no ???