Over taking extra things; progesterone

Anyone choose to not go on progesterone and everything be ok? (For first trimester)

I’ve had losses this year and had been on progesterone. Not blaming progesterone on anything. If I get pregnant again do I really have to or need to do progesterone again. I kind of give up taking anything extra.

Is it truly important to get on it as soon as you get a positive? That’s always been what I’ve done. Been told by doctor. Just looking for advice if it’s really necessary. Especially with my losses. Don’t want to take anything anymore :/