I also had one that went to term. I put myself on a modified bed rest and it helped me to try to stay calm. That is the mist important thing is to try not to stress too much. My doc said 1/3 of all pregnancies have a threatened miscarriage which means it is more common for it to happen. Keeping you in my prayers.
The thing to remember is that it's a threat at the moment. Not a guarantee. I've had 2 threatened that went to term. So it could be nothing & the stress isn't any good. Just take it easy for the next few days. And if you do get bad news, remember, you did nothing wrong. Most miscarriages are because the pregnancy wasn't viable for one reason or another. Not because of anything you could control. Best of luck. Keep us posted.