Impurity coming on a blanket
Q: I saw a spot of blood on the blanket. I was on my monthly cycle but there was already blood spot on another place which was not impure blood. But I noticed another spot and I'm not sure whether it's impure or not though the bedding etc is not stained. If I give the blanket for washing in laundry as the blanket is big and difficult to wash will it suffice and be pure?