8 days late

So my period is now 8 days late. I’m probably going to take a test tomorrow morning. I’m scared because I don’t want to be let down. I thought I was getting my period because I was having slight cramps and my boobs are sore but the cramps went away a few days ago. Only thing I’m concerned about is that now I’ve been having sharp pains for about three or four days that happen off and on. I attached my calendar just for reference. I feel like I have a good chance this month.