To scared to take pregnancy test..

Hey so I have been ttc for last 2 years now, my period is now late but on the day it was due I had bit of brown blood so thought was my period starting this has since stopped, I’ve still had cramps but no sign of more blood, I’m now in the over thinking stage and told myself that could be implantation bleeding, But the cramps are still there and I’m to scared to take a test incase it’s negative, as it will break me 🙈🙈😢😢 I keep saying give my body one more day, when would you all advise to take test I think a week after my period being late is when I should!