Suggest Remedy For Irregular Menstruation

Hi, may I answer your health queries right now ? Please type your query here... I came off the pill a month ago. After 29 days I thought my period had started but all I have had is brown spotting for 6 days. It's not heavy bleeding although has been heavier at times but is mainly when wiping. Is this normal and how long will it go on for? I was on the pill for about 15 years