I've only lost 7 lbs since I started Jan 15th, so you've got me beat with your 10. I'm 42 and have been working out at the gym 5-6x week and eating about 1500 calories per day with lots of water. I too used to find it soooo much easier to lose weight. I suppose it's the metabolism slowing down. I don't honestly know. As far as I know, I'm not premenopausal. The only symptom I've had is the urinary issues. No hot flashes, etc...
5'6 female, 42 yrs
6-6-14- 190.2 lbs
"If it doesn't challenge you, it doesn't change you."-Fred Devito
"Your body can do anything. It's your brain you have to convince."