having grown up in a city where Hatzolah does not exist, I think people call Hatzolah for the smallest things (because they're told: anything happens, call Hatzolah). If all it is, is several stiches, why couldn't you drive to the ER yourself?
I'm not trying to downplay your situation, but I've seen people call Hatzolah for just a trip to the hospital when they could've just gone themselves.