Am I going crazy?

Taylor • 01/15/12 💍 && ttc👶🏻#1
I feel so paranoid, my period was 13 days late. I got a positive and a faint positive pregnancy test. Sometimes I feel so pregnant and then other times I don't. I have an appointment Tuesday for blood work, but I'm like scared I won't be pregnant. I'm so use to bfn tests it's unreal. We have been ttc for 2 years. I don't know what to think.