Should I be concerned?

Rebecca
Hello ladies, I wasn't sure where to post this and so thought here would be the best place:
I'm not sure if I'm spotting or having a light period, but when I went to the toilet a minute ago (sorry for the tmi) I noticed when I wiped that there were small red almost string like things on the paper. There weren't many, but I've no idea what they are, I don't think I've had them before and was wondering if anyone else has had them/know what they are/what they mean? 
Thank you! :)

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