Yup! It can take anywhere from days to weeks to months for eggs to get up to a 'large' size...can depend on the breed and/or the individual. Congrats on your eggs!One of my Australorps has just started laying eggs and while they are visually perfect, they are a little on the small side. I have heard them called pullet eggs and I assume they will get a little larger later on when she gets cranked up.
FYI.....semantics, maybe, but can be important communication terms when discussing chicken behavior.
Female chickens are called pullets until one year of age, then they are called hens.
Male chickens are called cockerels until one year of age, then they are called cocks(or cockbirds or roosters).
Age in weeks or months is always a good thing to note.