'chhila'/post pregnancy 40 days

I’d like to know if there is…

I didn’t really observe any chilla or anything with my miscarriages…but just did the usual observations of being na - paak (ie no namaz/praying etc etc)

Only thing was mum made me some food - like methi paak or summat and other stuff…but I didn’t really eat it much!

Sometimes in my paranoid moments I have often thought that maybe I didn’t do sumthing I was supposed to hence not conceived yet??

Wuld love to know if I should have done something different?