If it turns out to be something, then you have to take oneday at a time. I just had a friend finish her treatment for breast cancer. She did wonderful.
Do you have a relationship with God? You must first trust Him in ALL things. When I am afraid I usually find a Bible verse to help me through whatever I dealing with at the time.
Psalm 56:3-4 When I am afraid. I will trust in you. In God, whose word I praise, in God I trust; I will not be afraid.
Did you make your appointment yet? That is the first step.
I will pray for you. Please keep me informed.