I deal with DV professionally, and you could be in considerable danger of a lot more than bruises. I train police and other DV professionals, and grabbing by the throat is a precursor to strangulation, which is one of the signs that violence is escalating. It indicates a heightened probability of homicide.
Please do contact the DV hotline. They can help you make a safety plan and get you safely out of the relationship. Please. Information never hurts anything, and it could save your life.