The only abruption I've ever heard first person about was absolutely excruciating for the mama. She said it was a passing out kind of pain (and she had done natural CB twice before). Bleeding can be hidden, so I'd focus on whether or not you have any rock hardness of the uterus that doesn't go away (you know how BH ctx go away?) or any pain in the uterus or abdomen that seems really intense.
Abruption is not something to play with, but I think the signs are usually there.
Light to you. Take good care of yourself.