Albie slept from 9.15 last night to 6.45 this morning than back to sleep from 7.30-10 and he's been…

Albie slept from 9.15 last night to 6.45 this morning than back to sleep from 7.30-10 and he's been asleep from 12.30 and still sleeping this is really odd for him he's also been really whingey I may just be a neurotic first time mum but is this normal? I've just started him on baby rice I wonder if he's sleeping for longer because he's more full up