WG,
It does sound like you're getting to a better place for you. You need to take care of you. Exercise can be a drag but it really is powerful on making you feel better and have more energy (which is kinda ironic since you feel drained right after a workout!). Having an exercise buddy helps too! My friend and I go super early in the morning and some mornings, if it weren't for meeting her, I'd just curl back up...but I have to go and meet her!
Definitely don't keep things bottled up. I did with my ex-husband, not that I think that would have changed his "ex" status but I have definitely learned a lot. I say what I feel and want and if they don't like it...too bad! Your husband loves you for you so just be yourself! Maybe if you went for walks as a family that would help bond too...it's good for your daughter as well. My boyfriend likes to get out a lot so we try to get our daughters out. He has a 6 yr old and I have a 12 yr old. We all have tennis rackets, fishing rods and golf clubs. We don't do it a lot cuz of time and the girls still aren't soooo keen on all those sports (obviously he influences the fishing and golf ) but we try!
Good luck with your self improvements!!