Girls, hello ? We're three months in, but the thing is we can't hold o…

Girls, hello ? We're three months in, but the thing is we can't hold our heads, our neck muscles are weak, we took medicine, went through a massage course, but we just lie down all the time, I put my head on my belly very often, as soon as I do, my head goes down and lies there, no rattles or pictures help, we've already moved half way onto the mat; I don't know what to do anymore, maybe someone has had this too, I'm so worried ???