My IVF doctor scolded me when I went to the ER
at 6
weeks for bleeding. He wanted me to be resting in bed, instead. The rule is to stay off your feet until 24 hours after the bleeding stops.
THAT SAID, if you are hitting the marks on the list above, go in. Sadly, nothing they can do at the ER will save a pregnancy that is going to miscarry. But if you are bleeding a lot, they can monitor you.