Hi there ~
I understand your concerns. It may be worth the while to take a urine
pregnancy test although it is very unlikely that you are pregnant. You must consult a qualified gynecologist to find out what the reason for you
fatigue, sensitive breasts, acne,
bloating and sore back are. You might need an
ultrasound of the pelvis and abdomen as well as other imaging studies depending on what is found in these investigations. I hope this helps.
Take care and have a lovely day!