Is it normal to feel “trapped air” in left shoulder after sex?

Madie

Me and my boyfriend were gettin busy on the couch after waking up from a nap. He did all of the work, I just relaxed on my back. But all of the sudden I felt this pressure build up in my left shoulder and radiate to my neck. I thought maybe I was laying on it wrong so I ignored it. Then yesterday we were having sex in his bed, again I was on bottom and the pain struck again.. the pain is still here and radiating through my neck. Has this happened to anyone else before or know what to recommend?