If you're at little to no carbs no, you're probably already in Keto, it only takes about 3 days of extremely low carbs, high protein/fats to get into keto. Keto is basically, giving your body no choice but to burn it's existing fat reserves instead of any new carbs you'd provide I. Once you're in Keto, you will know bc your piss will have a very strong horrid smell to it. Your sweat and breath will also stink.
Online def from
http://www.medicalnewstoday.com/articles/180858.php:In normal circumstances, the body's cells use glucose as their main form of energy. Glucose is typically derived from dietary carbohydrates, including sugar and starchy foods such as bread and pasta which the body breaks down into simple sugars. Glucose can either be used to fuel the body or stored in the liver and muscles as glycogen.1
If there is not enough glucose available to meet energy demands, the body will adopt an alternative strategy in order to meet those demands. Specifically, the body begins to break down fat stores to provide glucose from triglycerides. Ketones are a by-product of this process.
Ketones are acids that build up in the blood and are eliminated in urine. In small amounts, they serve to indicate that the body is breaking down fat, but high levels of ketones can poison the body, leading to a process called ketoacidosis.2
Ketosis describes the metabolic state whereby the body converts fat stores into energy, releasing ketones in the process.3