I was driving home and I don’t know what happened but I had the worst pain ever witch I still have…

I was driving home and I don’t know what happened but I had the worst pain ever witch I still have it’s on my lower back I thought I was going die I went to er and they said that there was going be a 2 hour wait time people r in pain and we have to wait 2 hours to get in my husband was pist . So I had to go to a different hospital couldn’t do it . Baby’s r fine I just pulled a muscle and it hurts bad realy bad muscle. What can I do besides take Tylenol.😪