I was told to drink people's period blood to make me pregnant but it hasn't worked, wat should I do?

No scientific explanation. It will worsen your health a lot and could result to non-pregnancy.

“For the holy spirit and we ourselves have favored adding no further burden to you, except these necessary things, to keep abstaining from things sacrificed to idols and FROM BLOOD and from things strangled and from fornication. If you carefully keep yourselves from these things, you will prosper. Good health to you!” (Ac 15:22, 28, 29)

That is gross and impossible. The only way you could get pregnant is by having sex with a man or through Artificial Insemination. Drinking another person's blood is dangerous. there is a risk of diseases like getting an STD ect. Who ever told you that was wrong.