Hey , i had my period on the 18th of nov , and had unprotected sex on the 23rd , when i went to the toilet on the 26th after having mild cramps i wiped and there wos a pink colour on tissue , now this last few days its went from light pink to brown and this has never happened to me before and im really worried , am not on any contraception or anything like that , am i pregnant? Answers will be appriciated. Thank you x