I know what you mean. I had this problem, too, when I first went vegan but I think it was just due to the initial shock of changing a lifelong eating habit. As long as you're getting all your vitamins, minerals, and nutrients you'll be fine. The most important thing for vegans to be especially mindful of is B12, iron, and Omega 3s. I could recommend some books or YouTube channels to help you, if you like.

One of my favorites is Bite Size Vegan as she has a wealth of information there! Colleen Patrick-Goudreau is awesome, too.