Feeling bad

Entering week 8 of my pregnancy. In the beginning i still can hold back from sweets, fried food, iced drink etc. Eat only what a preggy mum should eat and drink plain water only. But for the past 1 week i cant hold back any more. Secretly drinking iced milo, takes sweet, eat all the junk food that preggy should avoid. Eat alrdy feel guilty, dont eat cannot take it. But, i really cant take it anymore. ?