To help you get started, I have put together a Sample Diet Plan for your 2ndTrimester:
BREAKFAST
7 am
6-7 Almonds soaked overnight1 tbsp flax seedsA cup of milk / tea
8 am
1 bowl Poha with carrots, peas and tomato2 Veg Parathas / 2 Besan Chilla with veggies1 Veg Sandwhich/ 1 scrambled egg with veggies2 whole wheat toastFresh Pomegranate/ Orange juice/ Cococnut water
 
 
SNACKS
11 am 
A bowl of Fruit  with 2walnuts, 2 pistas and 2kajuA bowl of yoghurt with grated beetroot Mix veg salad with sprouts1 bowl Soup 1 glass Buttermilk 
 
LUNCH
Option 1 
1 pm
Wheat pasta with veggies in tomato sauce with 1 tbsp cheese1 bowl veg soup / Chicken soup1 bowl stir fry French beans/broccoli1 bowl salad (sprouts, tomatoes, cucumber, carrot)
Option 2 
1 pm
1 bowl Pav baji with 2 wheat pav1 small bowl Veg Pulav1 bowl salad
 
SNACKS
3 pm 
TeaMilk1 small bowl hummus with Cucumber carrot sticksRoasted chana with small piece of jiggery
 
SNACKS
 
6 pm
1 Sandwhich with hung curd mixed with spring onions,Cucumber1 Methi Khakhra +2 dates+ 1 Bowl of fruit
8 pm
Veg / Chicken Soup
 
DINNER
Option 1 
8.30 pm
2 Veg Parathas with 1 tsp ghee1 bowl Paneer/ fish / chicken pan fry1 bowl chole & salad1 glass Lassi
Option 2 
8.30 pm
1 bowl Brown Rice1 bowl Dal1 bowl mix veg1 bowl salad
10 pm 
A fruit A glass of milkFew nuts / dates