It may or may not be a MC. My advice to you would be...be prepared for anything. Whatever happens...keep calm and think positive. Try to genuinely be thankful for the outcome...whether good or bad.
I have had a previous history of Miscarriages and had spotting at the beginning of this pregnancy as well as cramping and back pain, I am currently almost 7 months pregnant now with a healthy baby boy. I would not panic, good luck
Some women do have bleeding during the pregnancy. How far along? Make sure you have pelvic rest (no intimacy) and drink plenty of water, rest of your left side after drinking full glass of water. Water is important. Dehydration causes UTI's, infection and uterine contractions. Try full glass of water, rest on left side for good blood flow and rest. Goodluck!