I am a 24 year old girl. It's my birthday next month. It's regarding my menstruation. It started on Thursday and ended like on saturday afternoon. It was not full flow like it use to be always. What could be the reason for sudden stop? please help. I was having bad cold and was taking medicines like sinarest and cheston cold nf. Besides I was really stressed out with my house issues. Could you please suggest me what happened with me.