I Saw Immediate Rash and Shedding After Starting Rogaine

Hi,
I am a 45 yr old female and have been diagnosed with hereditary loss. I started rogaine 5% about 10 days ago, I immediately developed a rash and started to shed more than 200 hairs a day and worse when I washed it? My hair was already diffused on top and now it is ten times worse.

I want to stop use because i cannot afford to continue to shed like this. Will the hair I lost grow back without use of rogaine, or is it gone forever?

There is no way to predict if the hair will grow back, but I suspect it will once the allergic reaction passes. It will take months to see the positive impact on regrowth.