Okay, well yesterday was the big day. Now I am currently undergoing HRT yay

Well anyways, I'm on Premarin and Spiro right now. . . and that's what they are going to keep me going for a little while here. Anyways, I know this takes time, but should it be a couple of weeks or more like a month before I begin to notice anything? I know you can't say dosage amount on here so I'll assume this as in a generalization.
Thanks for the help everyone.