Missed miscarriage medical managment

Hi. I had an ultrasound 2 weeks ago due to spotting. Going from my lmp I was 7 weeks however my scan measured 5+3 which was impossible,it would have meant concieving the day we got our BFP. We saw our baby's heartbeat and was told to return for a growth scan in 2 weeks. So Monday just gone we had our second scan at 9 weeks pregnant. It showed our baby stopped growing and heart stopped beating just after our first scan. We chose to have medical management as I've had a d&c before and was worried about damage. I had a pessary dose of 4 misoprostol tablets at 2.30pm monday and started spotting within the hour. At around 8pm I was having contractions every 30 seconds for an hour. I was screaming in pain and vomiting however not really passing much. The pain settled down to light period pain. Since then I've only had period like bleeding and I know I haven't passed anything yet. I was wondering from anyone's experience how long it took for the miscarriage to complete/pass the sac? The hospital won't give me a second dose until a week has passed. I really torture waiting around. I know everyone is different but this waiting is killing me and some advice would be comforting. We are truly devastated. This was a rainbow baby concieved naturally a week before our <a href="https://glowing.com/glow-fertility-program">IVF</a> referral. Life can be so cruel. Thanks in advance XX