Yesterday, being almost 3 weeks late, I took a pregnancy test and it was negative. I was almost sure the test was wrong. I have been experiencing slight weight gain and other period-like symptoms that lead me to be nearly sure that I am pregnant. Last night, I could barely sleep because of severe stomach cramps. This morning I started bleeding, but this is NOT a normal period for me. I am having severe cramps, bright red blood, large dark clots, on and off nausea and it is VERY heavy. I have also been experiencing strong headaches and body weakness and I am unsure if they are linked in someway. I did some research online and found that sometimes these are symptoms of miscarriage. So...is it just a late, miserable period, or is it possibly a miscarriage? I would really appreciate some advice/guidance. Thanks so much!