Yellow body strong helping fertility

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Has anyone heard of yellow body strong aka cuerpo amarillo fuerte? They are shots of progesterone that come in a pack of 6 that help make you ovaries and uterus stronger. I’ve heard a lot from family members who have tryed to conceive for years and once they tried the shots, they got pregnant on their first try. I been trying to conceive for 13 months and I think I want to give it a try. Has anyone tryed cuerpo amarillo fuerte? If so I’d love to hear about your experience. I know my mom did it, aunts, and family members of friends and so on did it and became pregnant on their first tryed