Been married little over a month and I realize I've made the biggest mistake?

This man I married is the most insensitive, uncaring individual in so many ways to me. When he says he loves me, which is seldom it's always said in an almost comical way. He has still kept contact with an old flame of his as well. He never pampers me or shows concern for me when I'm ill. When we make love he does so without much feeling. I will be going on and on about how deeply I feel about him. He says nothing, s, turns over and falls asleep. He must be in control of everything, even if sometimes when I'm feeling bad he says I must do what he says or I'll be grounded. Now on the other hand he has two daughters who he treats like little princesses. He talks ever so sweetly to them, gives them anything they want. I could go on and on, but this is getting long. I would like to leave but my 22 year old son has moved in with us to focus on his degree, so if I left, his getting an education would be very difficult. Should I forget my own needs and happiness in view of my son's future?