What Causes Pelvic Pain And Nausea?

im 18 years old, its been two days am havin pelvic pain or ovary pain coz its not specific on one ovary and the pain is continuous am gettin a lil of nausiness dont know if its the pressure or the pain .. it really hurts while my period is still two weeks far .. am scared i could be pregnant although i'm a virgin .. i really need your help and thx