Had my period about 10 days ago (normal and lasted normally, like usual). It's been 10days now I have pink spotting. What could it be?

Midcycle spotting. You may have a midcycle spotting. In midcycle (around ovulation) there is a hormonal change of 4 hormones which can cause a slight spotting. Evetulally the proper level of hormones is achieved depending on wheter you get pregnant or not. It does not mean you are pregnant. See your doctor if you have questions. Keep a menses diary to bring it to doctor.