certain medications while pregnant

is Tylenol 3 bad during pregnancy I got it prescribed in the er for a kidney stone is it safe to take or should I avoid them the pain i have is unbearable I have been trying to deal with the pain but I can't anymore recommend dosage is 1-2 every 4 hours as needed for pain.. but also everyone in my family has this thing that they want me to deal with the pain without them knowing how unbearable it is sometimes I wish they knew how bad it feels also the Dr knew I was pregnant before hand cause I also got given morphine for pain in small doses