I strongly agree with what the above posters say. In the short term they'll cause dehydration. You won't lose fat, just water which you won't be retaining (in most cases) any more than you need. They will also alter your electrolyte balance which causes problems to nearly all the organs in your body. With diurectics the particular worry is potassium and that can have strong affects on your heart. These effects are compounded greatly if you're still using the laxatives.
In the long term they will potentially destroy your kidneys, definitely affect your blood, could affect your liver, heart and brain causing serious damage.
I would strongly advise you to stop taking them. I also feel you should read the
ED Article and also get some kind of emotional/ psychological help to try to support you through this and if you have that then try and tell them what's going on. I know it's really hard but this could do SERIOUS long term damage to you and could potentially lead to death as well as the short term affects being very dangerous in themselves so you do need to try and get help so you can stop this.