A baby in the womb is either a human being or not. It’s not a matter of personal taste or whatever we want it to be. From a scientific standpoint, there is absolutely no question that the baby in the womb is a human being.
Of course there's a "question". It's the same question we ask when someone is brain dead. We even call them "vegetables" to emphasize the point. The key being that a human being is more than a lump of living flesh. The thing that makes a human being is a mind. Without that, a human body isn't complete - not a human being. It's just a lump of cells.
No, from a scientific standpoint that is not what makes us human beings. That is simply your opinion, and it’s completely arbitrary. Genetically, in our DNA, we are human beings from the very beginning. Everything that makes us a unique, individual human being is there, in our DNA, it simply needs to grow and develop.