Want to go vegan again

I have gone vegan two previous times and each time it made me really sick. So now I'm vegetarian but I don't eat most dairy products or eggs unless they are in something. I'm wondering if I should try going vegan again especially because eating animal products is more of a moral dilemma for me than anything else. Also no one in my family or in my friend group is vegetarian or vegan and so there is very little positive support for my lifestyle.