Hi there. I am sorry this happened to you. I think you are right to be concerned about what happened. A partner using physical force against us can be very, very scary

If you are trying to determine how much cause for concern you have, take a look at this article and see how many of these behaviors you recognize in your relationship:
Domestic Violence for WomenThe fact that he equates sex with violence and wants to treat you like an object is a huge red flag.
There is also an assessment you can take to determine the amount of risk in your relationship. It's called the MOSAIC assessment.
MOSAICDoes he often do things like slapping your hand "as a joke"?