Oh, tears, don't let any member here drive you to do something rash. Although I can't answer the question of whether or not you are being abused, I do think what your husband did was inappropriate.
No one here can tell you whether or not you should leave your husband, but it is not a decision that needs to be made right this very second.
If you are afraid, I can recommend that you call the Domestic Abuse Hotline and they will be able to guide you.
For the US:
National Domestic Violence Hotline:
1-800-799-7233
1-800-787-3224 (TTY For The Deaf)
By state:
http://www.letswrap.com/usadv/
(Click on your state for various hotline phone numbers and other information)