Talk to Gynecologist on Junk Food Craving

Aoa im 24 years old before my marriage i use to eat home food only but after marriage i got additced to junk its been 4 years to my marriage i also had some mental stress and made food my friend and now i am so much additced to junk food that i dont at all eat home food and im a mother also but i cant help myself i stay hungry all day and order at night i cant help it because i night i start craving badly plz help me i want to leave junk food i have also gained 20 kgs :(