Help! My kitten has a lump on her tummy!!?

Question

It's like a small soft lump that you can see through her fur on her tummy, about the size of a pea. She is 8 weeks old and I know the lump is not a tick or a nipple, i was wondering if it would be a flea bite?? I saw a flea on her the other day but she only has one lump like this, it doesn't hurt her when I press it. What could it be?

Answer 1

but what if they have a lump AFTER they have been spayed already??

Answer 2

but what if they have a lump AFTER they have been spayed already??