So, my baby daddy decided the babies nails were too long and cut them with baby clippers the first…

So, my baby daddy decided the babies nails were too long and cut them with baby clippers the first day home. He ended up pinching 3 fingers and causing blood blisters. This was 8 days ago and the blisters are still there. Do blood blisters generally take that long to heal & should they be drained. I've never had one or have been stupid enough to take nail clippers to a fidgety newborn.