Almost 3 weeks ago i had a period for only 2 days. I have had constant cramps ever since. They are like period cramps but no period. I did have diahrrea like twice within these 3 weeks. Im also very tired and get dizzy every once in a while. Along with all of this i have lower back pain, Clear oderless discharge, and some nausea. I think this is all stress related but i am concerned it could be pregnancy or endometriosis. Any advice is appreciated thank you.