Hi Radiantpickle
I don’t know your history or situation but just from your post here now, I would say visit your GP. These are quite extreme reactions and can be due to abuse, but could also be the result of physical illness that needs investigating.
Its better to talk about it to a professional, and to rule out any underlying physical cause before looking further at possible psychological reasons. If your relationship is abusive for example, without any other physical cause it seems reasonable to assume these are abuse related experiences. As I say, as I dont know anything other than this post, I can’t really say further, but do get it checked out and hope you can keep talking through anything else you want to here.
warmest wishes
ts