Indentation lines

Hi ladies. I got what I thought was a very faint line on a frer. My OH saw it too so I’m not crazy 😝 but was wondering how common are indentation lines? This line had colour. I’m due my period between today and Sunday. I did a clear blue too but it was negative.
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This is my indent, pink within time. Only way to be sure to check if line darkens or confirm with other brand