Help! Random Pain 3rd Trimester(shoulder/neck/collarbone/chest)

B

I’m 28weeks, today I had an intense sharp pain in the left side of my chest when I took a deep breath. The pain radiated up my collarbone into the left side of my neck to the base of my skull. The pain isn’t as bad when standing but when I sit or lay it’s pure misery! It somewhat is felt in my shoulder blade then at times just my neck. Any suggestions? My bp is 106/72 (I’ve always been on the lower side due to staying active) pulse 82. No headaches or abdominal pain just the left shoulder/neck:shoulder blade.