I'm going to share a little story. I have a very good friend who, bless her heart, just loves to eat too much. She has been on and off with Weight Watcher's for years...she had her yearly physical last week and she told me her doctor really chewed on her because she has gained 50 pounds in the last 8 years and he wants her to get some of that weight off. She told me that after the doctor appt. she called up her WW leader (now I know nothing of how WW's works) but anyway she said she told her sob story to this gal and the gal gave her a good bit of tough love...told her she would never lose the weight until she made up her mind that she was tired of being fat. Told her she was addicted to food and until she dealt with that issue she would never lose any weight.
Apparently this gal is tired of listening to my friend complain how she tries to lose weight but it never comes off. This gal at WW used to be overweight and lost 80 pounds doing the WW program but like my friend, she also yo-yo'ed for years until, in her words, her husband finally told her she was just wasting their money being a WW's member because she ate too much and was still fat despite working out at the gym regularly. Anyway, for that gal her husbands tough love was what finally made her take a good look at herself and see that she was her worst enemy and set about correcting that...and in the process lost the 80 pounds she had been trying to lose for years.
Now, I tell you this story because my friend asked me yesterday if I would help her because she is desperate for a support system. She sees me all the time and I don't have a weight problem, she knows I workout regularly, and she rarely sees me put junk food in my mouth. But I told her the same thing her WW leader did, that until she makes up her mind for herself that she doesn't want to be overweight anymore (btw she used to be very trim) that no amount of support will stop her from putting donuts and candy bars in her mouth. She also goes to the bar every day after work and pounds beers with coworkers. She already said she wasn't going to give up going to the bar. She's already defeated herself and so she'll use not losing any weight (because of the beer) as her excuse to give up once again.
She wants to be thin again but she doesn't want to have to change her lifestyle to do it. It won't work.
When you say in your post that the weight just doesn't seem to go away...that comment just reminded me so much of my friend. The extra weight will not 'magically' go away. It takes hard work in the form of regular exercise, and it takes a change in your perception of food and what your personal goals are for your future health. You can go to WW but no one will be with you when you decide to cheat, and then cheat again, and then again and again...
Goodluck to you. I hope that this time you can clean up your diet and lose the weight you want to. Pregnancy is definitely easier if you're in good physical condition...I know because I gained 50 pounds with all four of my pg's. I needed great upper body strength to haul around my size 'G' breasts! Good grief thank goodness those are just a bad memory now.