First time mom

Shakyla • I have a one year old baby girl💞🥰 & Pregnant with baby #2 🥰

So I’ve been craving a Vito sandwich from Jimmy Johns which includes (salami, pepperoni, lettuce, cheese, and mayo) I’ve been hearing that it is not good to eat deli meat unless you heat it up? So I was wondering how long should I heat it up? If this is true