Hello ? My nerves are about to burst, for the past two months if not …

Hello ? My nerves are about to burst, for the past two months if not longer, the child has been sleeping poorly. He sleeps and I hear him struggle to breathe, like he's having a nightmare, starts crying and then cries, so anxiously as if something strange had happened, doesn't wake up while doing so. I rock him, and it's all over again. He starts thrashing around in bed, and ends up waking up again. Sometimes the night goes normally, he doesn't wake up once, but sometimes the whole night can be this painful. Have you experienced this? What did you do? I'm just about to hang myself. I used to at least get some sleep,