Hi Iam Suffering With Bleeding After 16 Days Of My

hi
iam suffering with bleeding after 16 days of my normal periods.. what i have to do? can i use cap primosa 500 or i need to consult a doctor.i have suffered with abnormal bleeding before 3 years.i have done with all tests ultrasound, thyroid,blood tests and all r normal. i am married now staying away from my husband from past 5 months.i am planning for children whether this will create a problem to pregnancy before or after.