Salaam

Ive heard that sighing invalidates salah (you know if you sigh out of annoyance)
I fear i have done this in the past

what if you were aware of the ruling at one point but then forgot about the ruling - I am worried that i may have sighed out of annoyance during my salats in the past and just forgotton that it invalidates salah and as a result never repeated it

What do i do now - do i repeat all my prays in the past because i dont know how many times i must have done it

this is really stressing me out now -