Maybe every pregnant women is different I was 25 weeks and still pushing the laundry bags,groceries bags and moving things around the house but I didn't feel any pain until I was already 30 weeks prego ..I hope u feel better just take care and if u had a miscarriage already prevent doing things u did with the first pregblnancy...
As long as your not bleeding, you should be fine. But I say should lightly because I'm not a dr. Bleeding, especially bright red, typically indicates a miscarriage. But just rest a lot the next few days with your feet up as much as possible. That should help a lot. But call your dr if your really worried, that's the best thing to do.