Fuzzy, yes I aware that female cats get heat unless than 6 months because I had an experience with 2 female cats Sussi & Kim...
Thats what my cat did now we have 4 kittens too! she was the baby of a stray cat up at my son's gym and we couldn't resist last year!
now her kittens are 2 wks old, want to keep all like you did! But we picked them up from first day and momma was fine about it...wish we had a basement- momma cat keeps wanting to move them to crazy places like my kids rooms or the attic!
when you start to give them a little food? just wondering cos they are driving poor momma cat crazy with feeding all the time!