Im 17 and Ive been having my period for a little over 3 weeks and I dont know if itll stop. They are usually regular and stable so this is a first, its been browny-reddish and very low in amount. I have iron deficiency so i take iron pills and hope to get this sorted out soon. I just started a job in retail that lasts for 7 hours, mon-fri so ive been walking more. Should i be worried or concerned??