I am 25,unmarried and having intermittent minimal bleeding between my cycles after 10 days of cycle and before 3 days of cycle, is this ok..?

Breakthrough bleedin: What you have called breakthrough bleeding. it means the Endometrium doesn't shed as it's supposed to, therefore it becomes thick and it starts shedding mid cycle. The possible causes are birth control pills, poly cystic ovary syndrome and low hormone level. You better see your primary care doctor to discuss this further,