Thank you for your query.
Pain alongwith brownish discharge is definitely not normal in pregnancy
SOmetimes, mild vaginal discharge
occurs , but alongwith pain , it points towards an impending miscarriage
or a threatened abortion
You should definitely get yourself checked before the pain and bleeding increase.
You might be given increased medications for pregnancy support.
Meanwhile, you should take rest, avoid exertion, avoid sexual intercourse and stress of any kind.
please consult your gynecologist at the earliest.