10dpo, period due in 4 days, Had some mild cramping like I was about to start my period, so went to the loo and checked my cervix where my mucus was a tiny bit pink so I put in a tampon at 17.33pm, then around 7.00pm I went to change my tampon to see if I had started but this was it.. (pic below)

ive had no more cramping apart from the mildest of cramp now and then.. any clues?