Test or Don't? Please respond

I'm late on my period. It was suppose to be here the 20th of March, it hasn't come yet. My SO and I have been ttc for some time now. I'm excited that my period hasn't come but I'm scared to test and see another negative. It's so heartbreaking every month seeing a negative. Ladies would you still wait to see if it comes or would you be brave enough to go ahead and test.