Prenatal vitamins.

Before I was pregnant, I was taking an everyday women's vitamin by shaklee. And I looked and felt really good. Since I switched to a prenatal, I have no energy, and I look like hell. My hair is dull, I have dark circles, and I can't get off my couch. Now I'm well aware that exhaustion is a very common pregnancy symptom but I feel like I'm lacking in something. I looked at the list of vitamins for each and they're identical but my shaklee had more mgs of each vitamin.

Is there anyone that takes just a regular vitamin compared to prenatals? Why is it pushed so much to take these vitamins that have the same exact thing as my regular vitamins did just less of. (Including folic acid, except my shaklee vitamins has a little less than the prenatal does"