Im nervous!

Back in October, I found out I was pregnant. It was such a whirlwind, I went to my doctor for having side pain, she wanted me to do a test, and it showed up right away! However, within the next few days i misscarried. 😢 Now fast-forward to now, my period is supposed to start either yesterday, or today, on some apps and on FLO it says by next Friday. Not sure which one to trust. However, the symptoms i have is super tender breast, nauseous, and a weird metalic taste in my mouth. I took a test about 2 days ago and it was negative. I dont want to get my hopes up. However, im really hoping i have a miracle. Im super nervous to take another test.