How do I relax?

So currently it’s 3 days until AF is due but I got my positive test last night on a cheapy test and then again in the morning on a first response 🤭 Faint lines but they are definitely there.. I have an appointment to get an initial test done on the 9th... which is only a few days away. But I’m so nervous , how do I relax? I had a miscarriage in Aug 2018 and I’m just overwhelmingly worried.