Any tips or what to do or try to go from vegetarian to vegan??

Ni
Now before y'all jump down my throat about meat or anything like that... I been vegetarian for awhile at least 1 year now every time I eat meat it bothers my stomach so bad so I now don't even try to eat it I do something but mostly it's chicken or fish when I absolutely need to... My family is no support cause they eat meat n don't see how vegetarian or vegan can help but I do especially now ttc for baby #1 & I look n feel a lot healthy! Opinions!? *I have a intolerance to meat btw* & yes my SO is supportive of this he cooks me whatever I want n whenever I want to eat.... Yes I can & do cook but I'm not the best....