For the past week i have been having sharp pains in my pelvis on the left side. this morning i also noticed bloody discharge. what could the causes be?

Infection or ectopic: Pain and bleeding could be signs of an infection or even more concerning an ectopic pregnancy (pregnancy in the fallopian tube). I suggest that you see a physician immediately. Infections can be treated easily, but ectopic pregnancies can be life threatening. Do not delay, see a doctor and find out the cause so that you can get proper treatment.