Lower back pain- Relaxin

This hormone relaxin came early for me again this pregnancy.  I was moving a bed into the spare room yesterday... yeah I know I probably shouldn't have done it, my husband told me not too... i knew I shouldn't have.  But we had people coming to look at the house.  I bent over pushing the box springs on the bed frame and OUCH!  A very bad pain went around my pelvis.  OH my gosh did it hurt.  Ben was on his way home but not there yet.  Thank goodness he was almost home.  I screamed and Luke came running looking at me like I was going to die.  I kept it together trying my hardest not to hysterically cry.  I did everything I could to walk into my bed.  I got there and laid down, Luke followed and we watched videos on my iPhone while I was painfully waiting for Ben to come home.
I went to the urgent care later on in the evening... but of course, breastfeeding and pregnant, I can't really take much of anything.  I can take Tylenol.  That does nothing.   But I did get the supportive back thing because it seems that my pelvis is already relaxing and needs support.  Ben is home with me today and I'm just laying around watching Season 3 of The Office, again.
Oh boy, this might be a long pregnancy.