im 9 weeks pregnant, i went for scan 2 weeks ago an they told me i was mesuring 7 weeks preg and a strong heart beat. i went for scan yesterday an they told me their no heart beat, the baby was mesuring 6 weeks, im so confused, im still sick and tender breasts, had no bleeding r cramps , i weigh 23 stone . they used an internal scan. please help me im so confused