It gets easier in a way when your child gets older. Those younger days really can be monotonous and taxing. I was a single mom until my oldest was 5 and I remember that for a long time, it felt like I was just grinding it out for months at a time...get up, get myself ready for work, get a stubborn, small person ready for daycare, pack lunches, snacks, the daycare bag, my briefcase, purse, load everything into the car, buckle him in, bring him to daycare or my mom's house, go to work, leave work, pick him up, dinner, bath, books, bed, zone out and watch TV, pick up the house, collapse in bed, do it again.
The reality is that for those first few years, you do lose a bit of yourself but it DOES come back. I literally had no one to help other than when I was at work (which of course was a huge help) but you do have a husband and he SHOULD be helping. The workload will probably never be split 50/50, but if it's more out of balance than 60/40 or 70/30, it's time to change some things up. If he would rather be home with your son in the evenings, then put him in charge of baths, books and bed several nights a week (or every night). If he'd rather not do that, then he can go grocery shopping one night and run errands another, or do laundry, or make lunches, etc. and you can actually do something you want to do, like go to the gym or for a run or whatever relaxes you.
The balance in my household really changed when I got a second job. My youngest was about a year old and the other kids were 3 & 9...it's been 7 years and we just divide and conquer. I always have the morning routine because I can go to work whenever I get there and my husband has to leave at 7 AM. But for evenings, it's anything goes. Tonight I'll go straight from the office to teaching and won't be home until 10. He'll come home and pick up one from lacrosse, drop one off at a friend's house, pick up another from the gym, cook dinner, clean up, supervise homework, and get them to bed.
Once your son is in school and has other activities in the evening, you'll find that your local social circle expands too and that makes having a life easier. I have been friends with a group of moms who started getting together for dinner one Friday a month when our kids were in 3rd grade...7 years later we still do. Through this circle of friends, I've met other friends with whom I run, bike, go to the garden club, volunteer, go away for a weekend, etc.
Also flylady.net is a great resource for plans on how to get things done during the week so that you have your weekends free to have fun and reconnect with family and friends. So check that out, put more responsibility on your husband to free yourself up to do at least one thing that you like to do (and don't feel guilty about it!) and know that it naturally does get better as they get older, it really does.