I have been taking a weight loss tea with laxatives and i have an implanon implant does that create risk for pregnancy

No: Hopefully, your weight loss method is a safe one under medical supervision

Implant will work: Laxatives and stimulants are for very short term use only. No stimulant has ever been shown to cause permanent weight loss. Try restricting your menu to only whole fruit, vegetables (no potato), eggs, meat, and water. 100%. No dairy. Don't eat anything that has an ingredient list until you reach your goal. We are mammals. We were not built to eat processed foods.