Hey Aarushi257! If you have had your usual amount of bleeding for the other days of your period, it sounds like you are just having a longer period than usual. This happens sometimes. If you were pregnant, you would have likely not had a period at all. If you're spotting it sounds like you are coming to the end of it but if it lasts longer, I would suggest checking in with your doctor.
I'm sorry if you mentioned this in a different thread and I didn't see it - but do you use any kind of contraceptives, like condoms? Are you on any form of hormonal birth control?