hmm, i agree with what some of the other posters have said, you do have an eating disorder and you really should try to seek some help, even if it just talking with a counselor to try ad get some of these feelings out.
I do understand how you feel though, i dealt with bulimia for 3 years and in that time abused laxatives and vomited. Honestly, the laxatives can and will do a lot of damage. I am lucky in that the laxatives didn't screw up my digestion completely, but they did to some degree, as did the vomiting. I am on constant medication for gastric reflux and suffer from bloating, gas and wind every time i eat. Sometimes it's so painful it leaves me in tears. I am sure this is from the laxative abuse. I have read stories about people who years later rely on them just to be able to go to the toilet properly. Just be careful, talk to a doctor, get medical care. Apart from what it does to your body in the long run, it really messes up your fluids and electrolytes in the mean time. But i know how you feel, i know the sense of 'emptiness' you feel after taking them, like it's undone all the damage.
You asked if anyone has been through this and gotten over it. Yes, in the fact that i've been recovered from bulimia for 3 1/2 years and i am proud of that. But i am still struggling with food, and weight issues and i wonder if i will ever have a normal relationship with food, i really hope it's possible one day. I haven't taken a laxative in 3 years, but do struggle with a relapse of vomiting maybe once every 3-6 months... It's hard.
Anyway, just wanted to lend a 'i know how you feel' at the same time as trying to warn you about the dangers lax can cause. I know it's not easy, but do try and speak to your doc and maybe see if you can organize to see a counsellor or psychologist for a while, it does help.