I experience a lot of the same pain that you are describing. First, I would find a good chiropractor and go! Insurance doesn't usually cover it any way. I go to the local chiro college, where they are income based, and pay $20 a visit. My latest intern, they change every 8 months or so, suggested that I do 'girlie' pushups. Basically its like the snake move in yoga, push up with your hands til our arms are straight, but leave your belly on the floor. Do 20 reps of these, then see if it feels better. If it does, then do more. If it doesn't, well, then do some more anyway. The idea is that it is moving the spinal fluid through the disks in the low back, which make the pain in the leg go away. She also does some massage type stuff with a metal tool that breaks up the muscle knots. You could have lots of different things going on in your back and hips to cause the pains. 33 is not old yet, and shouldn't have any of this pain. The groin pain could be from something out, a pinched nerve, or a combo. After I had my kids my pelvic bones would pop in and out. Its been 5 years since the last one, and I think its been a few months since the last pop. I personally feel that anything skeletal should be dealt with by someone who studies the skeleton and the muscles that support it. If there is something else medically wrong, then the chiro will tell you to see a doctor. Or, do both.
As for your husband belittling you, tell him that you feel YOUR pain, he feels his. He can deal with his how he CHOOSES to, and YOU will deal with YOUR pain in YOUR way. This is something that his counselor should be able to support. You are not negating his methods or feelings, but you are also not discounting his either. And, let me tell you, I get it! It hurts! it is not made up, it is not unreal, and it is something that should be dealt with.
I also recommend 800 mg of ibuprofen 3x a day to let the muscles heal, take down the inflammation, and calm the pain down. Your body can't heal something that is hurting and inflamed all the time. If you go to a doctor, this is the first thing they will tell you to do. (Wanna know how I know?) Good luck! I wouldn't take it anymore if I were you.