Also can we talk about how to mil is promoting her son's rape? like

Girl have the baby, somebody must've heard noises comming from the room last night they'll probably think it was you and your husband. Just pretend the baby is his, if it doesn't look like your husband at all then just say it looks like you, and if that doesn't work say it looks like a your grandparent or one of your parents. Skin and hair color won't be an issue so it's easier to slide them under the radar.
If all else fails kill your husband. Your lover may become the next family head, he could make you his wife or his concubine we'll see.