Faint line

I got my first faint positive on a First Response Early test, however I had this happen before and it ended in a chemical. My question is, how many days should I wait to retest to see if the line gets darker? I want to take another tomorrow 😂😂 Too soon?

Side note: I’m waiting to tell my husband until I’m sure I’m more sure it’ll stick. Don’t want to disappoint him too soon!