I just completed my DScPT (Doctor of Science in Physical Therapy) degree this past May. I did most of my coursework online, while working full time. I got most of it done before the kids came along but still had a few credits and the dissertation to do. It was a huge challenge to finish my degree while chasing 3 kids who aren't even in school full time yet, but I'm so glad I did! I just wanted to be able to continue in the field I originally got my BS in, and not have any limitations on the type of career path I could take. My husband also works a long day and then is in the Navy Reserve so is away a lot of weekends. He provided as much help as he could, but it was rough to find enough time to myself. A couple of weekends when he was home I asked him to drop me off at a hotel so I could work all weekend uninterrupted! I think I used up most of the hotel reward points he collected on business travel, but that's the price you pay. No vacations coming up for us anyway :)
Just want to encourage you to stick it out and push through the rough patches. You will be so happy to have reached your goal you'll forget all the stress you went through! Well, that's not true, but it's great to feel secure and accomplished. Best of luck!