Spotting and cramps can happen to normal women mostly during her ovulation time, this is due to hormonal
This is normal phenomenon. If your pain is unbearable or there is heavy spotting your doctor may provide you with drugs which regulate menses (these drugs stops ovulation thus relieving from symptoms)
For the present complain I believe you need to take ample rest, drink plenty of water, you can take analgesics like ibuprofen
Hope I was of some help.