What is an ectopy or tubal pregnancy?

Explanation

### Step-by-Step Solution:

1. **Definition of Ectopic Pregnancy**: Ectopic pregnancy, also known as tubal pregnancy, occurs when a fertilized egg (zygote) implants and begins to develop outside the uterus, most commonly in the fallopian tube.

2. **Fertilization Process**: The process of fertilization occurs when a sperm cell fuses with an ovum (egg) to form a zygote. This typically happens in the fallopian tube.

3. **Movement of the Zygote**: After fertilization, the zygote usually remains in the fallopian tube for about 3-4 days. During this time, it undergoes cell division and develops into a blastocyst.

...