I had back pains, abdominal pains, neck and shoulder pains even headaches and a small fever I went to the hospital and I was told I was spotting after the doctor did a vaginal exam. I had done a previous pregnancy test that was negative but it had only been a week so I thought it to be inaccurate. A couple hours after I had seen the doctor I began to bleed profusely, there were blood clots, it had been after my first week of having unprotected sex. I am experiencing back pains and abdominal pains did I have a miscarriage?

There is no way to know.
Symptoms can be very similar to an unusually heavy period.
It is estimated that there are millions of early miscarriages all over the world every year, and no way of tracking them statistically.