Suggest Remedy For Pain In Groin

Hey. I am two weeks late for my period. I have been having groin pain,eat, and sleep alot. I am in nursing school which can be stressful. I took two test for like dollar tree at 9 pm and they both were negative. This is weird but usually i get a rush when my period comes and i know its on but i got that rush twice but it was clear thin discharge that soak my undies. I dont know whats wrong and i be really bloated. I was thinking maybe i am pregnant or something more serious. IDK...