In the Name of Allah, Most Gracious, Most Merciful.

 

All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.

 

You need to consult your gynecologist who may advise you whether it is due to menses or a case of abnormal bleeding. If it is the former, then you need to stay away from Salah and Fasting and count the days based on the pattern of menses you used to experience in the past.

 

Moreover, you should reckon any bleeding that comes after as due to istihadah. In the latter case, you ought to perform Salah – after cleaning yourself and performing ablution.

 

Allah Almighty knows best.