Human Fetuses Right To Life

Human fetuses do not have a heart beat until ten weeks and do not feel pain until about 18 weeks but do they have a right to life? Once the egg and the sperm connect it then forms a zygote which then turns into a fetus and then turns into an infant but does that mean the infant has a right to life? In my opinion I feel as though human fetuses acquire a right to life at conception for three reasons: the first group cells duplicate and turn into a fetus, once the egg and sperm meet fertilization occurs and DNA is set up to make a new person, and the baby has to be living in order to grow inside of the mother.
Although the baby does not have a heart beat at conception it’s still a living group of cells which are rapidly growing and maturing