I woke up this morning by cramping at the left side of my tummy an i could feel it in my back as well i was laying on my stomach. advice please?

Lots of info needed: First, we need to know where you are in your menstrual cycle. If you are just premenstrual or having your period, feeling cramps in your abdomen and back is a possibility. The intensity of the pain, and if it progressing/worsening is also important, as is associated bowel function or having a fever. If it is low intensity/no fever you can watch for a few hours. If it persists or worsens, seek eval