Rogaine shedding period...would propecia be better

[Youngun]

Hey everyone,
I'm new to this so i really hopes this works. I'm 25 years and still have a full head of hair (for the time being). I have baldness in my family and i see that i've been losing hair for the past couple years (thinning in the crown and entrances in the front). i decided to be proactive about it and started using rogaine foam combined with nizoral about 2 months ago. i've been using the foam on my crown and at my entrances (i know it's not meant to be used there but i've read about some positive results). Im being very discouraged because of the shedding period. No lie, its increased 5 fold. Is the hair supposed to be shedding just from the spots where the rogaine is being used or everywhere? cause i feel likes its affected my entire scalp. how long is the process supposed to last anyways?? the way i understand that rogaine works, is that shedding is normal, and that the hair would of fallen out anyways and then a new stronger follicle would replace it. But does that mean all my current hair is going to fall out through the transition process??? i've also thought about maybe using propecia/advert since i have most of my hair and those remedies are meant to stop hair loss as opposed to rogaine which helps regrow hair...but im scared about the potential side affects such as not being able to get a woody lol please help, any feedback would be awesome.