At the beginning of gestation (ie. day 1 of a pregnancy), the mother carries something that isn't a human being yet, but has the potential to be.
At day 274, the mother carries what is effectively a human being. The 274 day process is gradual, such that there isn't a clear point at which a blob of cells becomes a human being.
Are you aware that some babies are born as early as day 160? (see below)
That would be 114 days before they are a human being according to your beliefs.
In other words, 114 days before they stop being a "blob of cells" according to your beliefs.
I have never understood why atheists try to say the 160 day old baby is not a person, not a human, etc. rather than just say of course a 160 day old baby is a human person but our laws say their mother has the right to decide their future since they are still in her womb.