Stressed

I find myself constantly worrying if I am providing enough nutrition for the baby.  I feel like I'm never doing enough or I can't do enough. I feel like there is always one more vitamin I should be taking or "You haven't had any kelp today."  I don't know, guys.  Are there any mommies out there who did feel or are feeling this same thing?  I feel like this is my one job to do and I am failing miserably at it.  Who knows, I may be doing everything right.  I'm probably just letting myself get stressed out.....I need to just pray about it.