Thick pink discharge?!?!

I went to the toilet earlier and there was a large amount of thick, pink tinted discharge (no smell, no itching) I’ve never seen so much! It was light pink when I wiped. I currently am on noriday but I accidentally missed a pill 2 weeks ago and had unprotected sex a day after.. Could it be the beginning of my period (I’ve had no cramps, no usual signs) or if it’s something else?!?

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