Do prenatal vitamins give you fertile reading on OPK?

Tara
Hello Ladies! 
New to the business of TTC, and was wondering if taking a prenatal vitamins can give you a higher fertility reading on an OPK? Was low fertility yesterday and medium fertility today, good chance my body is working since I'm technically 11 days past AF and due to enter my window. 
I used clear blue advanced OPK and nature made prenatal vitamin. I tested in morning with OPK because that's how the box says to test-I know that's not how others say to do it. 
Any thoughts or advice?