Priyan, take control over the small things around you - start with breathing. Know your surroundings - in case you must evacuate on a short notice, you need to know where to take cover. Try to secure water and food. Make a plan (helps you to find a meaning for the next hours, days...).
Shelter together with others like you - even if they will be complete strangers at the beginning. Don't stay alone. If you need help - physical help - you don't want to be alone.
Make friends, help others... Help will come back when it will be needed.
Don't expect anything from anyone - everyone is on his own. Abandon things that are not needed for your survival - you love your dog, but depending on what kind of dog it is, might slow you down.
Wish you all the best!