Hi,
For my first baby, I had no pain. Earlier on the day, just like you... I heard his heartbeat for the first time and the midwife said it was strong. I asked her about the backache I had for about a week and she said to take paracetamol if it gets unbearable. That was it.
4 hours later, while sitting down while waiting for dinner to heat up, *pop*! I was home alone because my hubby had his work christmas do that night. Cut story short, I rang 999 and ambulance came about 40 minutes later. Baby was out before they arrived. But because placenta was still stuck in me, I was taken to the hospital and admitted for 2 nights.
Saw the consultant a few weeks later and he said "chicken & egg" situation. Either the miscarriage happened to due incompetent cervix or bacteria infection the cervix caused it to open. Anyhow, next pregnancy he said TVC (vaginal cerclage) is most likely needed and I got it because when I was 8 weeks pregnant with my 2nd one, my cervix was measured at 1.8cm. When they did my TVC at 12 weeks, I was already 1.5cm with slight funneling.
The consultant said for baby #3, he would advice for the wait and see approach. He suspected perhaps it was the surgery that introduced bacteria which caused the cervix to weaken further. I couldn't accept that. I went against his advice and sought out 2nd opinion. I read about transabdominal cerclage and only a few drs in London do that. Lucky for me, the dr agreed and said I definitely need some kind of cerclage and best to do it pre-pregnancy. I did it.
But because of the miscarriages, I wasn't ready to be pregnant again so we took 2 years off and now, I am 6 weeks pregnant with new hope. I am putting myself on bedrest, so to speak. I stopped my work and have been in bed as much as I possibly can for a 5 days now. I'm just paranoid. The cerclage is suppose to give women with incompetent cervix chance to live like normal, but yeah... I'm paranoid. My husband agrees I'm paranoid but he knows he can't talk me out of it.
TVC does work. It has about 80-90% success rate. I was given 95% success rate with TVC plus antibiotics and progesterone suppositories but unfortunately, I fell into the 5%. So don't brush off TVC if your dr suggests it. How many weeks pregnant were you? I must say a lot of women with incompetent cervix suffer from water bag broke before any pain comes. Gravity is our enemy. Depending on how weak your cervix is, really. Mine was further damaged when baby #2 tore through my stitch when I lost her.
Hope you are getting on okay.