Sharp pain when breathing

I'm 29 weeks pregnant today and have been experiencing sharp pains under my ribs and in the middle of my chest when taking a deep breath. I kinda chalked it up to normal baby growth and uterus pressure on my lungs, but I am a ftm and just want to make sure this is normal. It was kinda scary yesterday because the pain got pretty severe for a couple minutes and caused me to be very short of breath til I laid down. Laying back relieved the discomfort after a few minutes. Should I be more concerned about this or is it most likely just normal at this stage of pregnancy?