My daughter was pregnant and was about 3-3 1/2 months along. She called me at work and said she thought she was having a miscarriage, could I please come to the hospital. She was bleeding everywhere with huge clots. There was even a tiny little thing in it that could have been the baby. The doc told her to be sure and visit her OB/GYN so they could make sure her hormone levels dropped correctly, then no need for a DnC.
A month or two later on she called me again, very very very upset. She kept saying the baby was still inside her and she wanted it out, her breasts were tender, no period, getting bigger stomach, etc....
So I met her at the ER and she was laying on the table crying hysterically. She kept telling the nurse "No, I have NOT done anything to get pregnant again". The nurse kept placating her and said "Honey, you probably just got pregnant again"...
Finally my daughter said "Do an ultra sound and see". So the nurse smiles and goes to get the wand to listen to the baby's heart beat.
My daughter's tummy had a normal heart rate but her baby's heart rate was around 140. Then the nurse got concerned. To hear the heart beat with that tool my daughter had to be at least 4 months pregnant.
So she had to have lost one twin and the other baby was fine!