Now that I have a year of parenting under my belt, I have to suppress a guffaw when anyone with a baby under, well, a year, says that their baby has started sleeping through now, in a "job done" sort of way.
As a poster above says, every single baby I know, even those that were freakishly good sleepers to begin with, has been through some sort of hideous and long-winded sleep regression before the year is out.
My own baby generally sleeps through now (so it does get better!), but it chops and changes all the time. She will self settle beautifully for weeks at a time, then suddenly need us to stand over her at bedtime til she stops shrieking drops off. She will do glorious 11 hour stretches- then go through a week of being up for 45 minutes in the evening.
Who knows if it's teething, a gripey tummy, or just her amazing baby brain growing and whirring. But it is normal.
People just don't talk about this stuff. Once their baby has slept through a few times, that's what they see as the norm (I do this too).
I think there is a huge pressure to have a 7-7 baby and it naffs me off no end. Because what does it really mean? That your baby is superior? That your parenting is superior? No!
It saddens me that so many parents, me included, feel they are doing something wrong when all they are doing is trying to be a great mum or dad to their lo.
Your baby is not going to put "slept through the night at x months old" on their cv. Don't beat yourself up!