Your implant still protects you at two years 11 months, and even if you are overweight. (Congratulations on the weight loss, by the way!)
Yes, I agree. You've got your birth control in place that should protect you from this event. Get it up to date next month to make sure you continue to be covered. I have read several sources online that state it will not interfere with the implant if you are overweight or have a weight change. So ,you should be fine sweetie.