Cramping...

Kenadee • Married! Mom of 1 Boy!! 23
So im on my period and throughout the day I am standing and sitting with hardly no cramps. When I lie down in bed the cramps are so bad I can't even move and will wake up from the pain. Is this normal or is this a sign of endometriosis or pcos??? It scares me...I'm probably overreacting but just wanted to see if it happens to anyone else?