Ok Two Weeks Ago I Had Viginal Discharge And It

Ok two weeks ago i had viginal discharge and it was during a cold along with that i have been changing my diet for the better good and drinking antioxidants drinks sonce i got really sick two weeks ago and now ive been recieveing upper stomach pains along with a brown period ive been checking to see if i have been pregnant and all of that is negative and as far as i know bc i asked my partner if he has any diseases and he said no and before i go to the doctor i just wanted to seek online advice