i had a very light period the month before last it lasted about 3 4 days and the next one was normal , am now experiancing cramps and blood clotting and bleeding is this a mis carrage or etopic ? gettin backache and pain in left shoulder am due a period either t day or t morra , or could this b because i have took my pill at diff times last month and missed a few ? wht will the doctor do can u help ? thank youu xx