Hi I really need some advice , my periods are regular every 28 days without a issue never late always starts on 27th of every month , ive been off contraception for 18 months now , I had unprotected sex on sep 14 , and 7 days later I started spotting was light pink then went brown not alot at all but lasted 6 days my periods due but ive not come on no sore boobs or cramps I getting tired quicker and grumpy feel occasional fluttering In my lower tummy whats wrong with me ?