Am I pregnant? If not when is the right age?

Patient: Hello Doctor,I am 24 and my husband is 29. we got married 3 months ago. I wanted to know if it is okay to postpone my pregnancy for next 2 yrs. will it harm my or my baby’s health in any way ? if you could please tell me how to prevent from getting pregnant these 2 years.thanks

Symptoms: Backache, vomiting sensation, frequent urinating, hunger, mood swings