Have you given the above feedback to the person who hurt you? To your teacher?
I think it makes sense to "take it easy" on beginners who have trouble taking the ukemi until their ukemi improves. However, aikido is a physical art -- sooner or later, as uke, you'll be needing to take a lot through the body. Sometimes, this will be uncomfortable, especially if you're learning the physical movements. But, I think the discomfort should be healthy -- "healthy discomfort" -- rather than one that induces fear.
Hope that helps.