I hid the test stick so my mom wouldn't see it

I’m suspicious, my period is delayed but I’m not sure. I secretly bought a test from the pharmacy and did it in the bathroom. While waiting for the result, I was so scared that my hands and feet got all jumbled up. My mom is at home, I don’t know what I’ll do if she sees it. I put the test stick in my bag and left, but I have a thousand thoughts racing in my mind. How will I tell my mom, what if it’s not a false alarm?