Do cancer lumps grow quickly over night?

Yesterday I felt a painful lump the size of a pea under my armpit. This morning, it’s gotta a lot bigger and hurts. My mom thinks it’s an ingrown hair and I’ve already set up a doctors appointment. But lately that same arm has been randomly feeling really tight like I have a rubber band wrapped around it and I’m worried it’s related. Someone please tell me if you’ve ever had these symptoms. I’m going to the doctor but I have to wait for my appointment and I’m really worried

I have a cold by the way, if that helps!

Thank you everyone for responding!

Update: I know this is old now but now I have another lump on the OTHER ARMPIT 😭😭😭😭 so now I have two! My doctor said it’s due to an infection but that was when I only had one on my left arm. Is it more serious now since I have two or is this normal?

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