Help 😭

So I’m 33 weeks and have had this horrible nagging burning pain below my ribs in my back for a few days now. I’ve been taking 1000mg extra strength Tylenol around the clock because it seems to be the only thing even remotely helping. I went into L&D today because I was on the verge of tears, took my urine and did an ultrasound of my kidneys, my OB was there and said ultrasound came back fine and was probably just a pulled muscle prescribed me Tylenol with codeine as sent me on my way. I have never not trusted a doctor but I’ve been on disability for almost 2 months because of covid so I’m not doing any heavy lifting or can think of anything that would of caused a pulled muscle. Ladies the pain is INTENSE, I’m not getting any relief. Has anyone had a similar situation?