What is the cause for my symptoms

Patient: Good day I have been having some strange symptom that idLike answered firstly I have been having bad lower back aches for no reason as well as lower stomach ache . I also had a irregular period which lasted 3 days my normal period lasts7 days. My appetite increased as well as my food cravings I alsohad some pain in my nipples as well as sore nipples .

Doctor: