Caffeine Limit caffeine intake from coffee, tea, pop and chocolate. During my pregnancies, I couldn't stand the smell of coffee. Alcohol Not even a sip. Alcohol can damage the fetus. Smoking Not even a puff.
Smoking harms the fetus.
Hopefully, your heartburn is not caused by your caffeine intake, smoking or drinking alcohol. By the way, the last few weeks of pregnancy are the longest days of your life. Be sure to keep busy doing things you won't have time for after the birth. Exercise Discuss with health-care provider. Continue as before but modify to energy level and difficulty.