A heat is the time when the Omega is most fertile and ready to mate, or just hide away until the heat is over. If they have an Alpha mate, they will never leave their side unless they need to get their Omega food or water. Mainly, they have sex and then rest. They keep a watchful eye over their Omega, listening to them and caring for them. But in bed, they still are the dominate ones. If an Omega has no mate, that could be dangerous to even leave the house. They could get raped and forced into all of this, even if they protest and try to run. So they basically lock themselves in a room and use many toys to get through this. A good part about this heat is that the Omega will self-lubricate, which means they only need to prep the Omega a bit more have sex. During these heats, the hormones in an Omega go all crazy. A strong scent is released during the heats, causing the Alphas to smell it and chase after the Omega. If there is already an Alpha with that Omega, they will fight the other Alphas off. Some public buildings have small rooms in their basements for any Omegas who suddenly fall into the heat and need help. In some verses, there are pills to stop the heats from happening and some verses have washes that help cover the scent up. There is a pad-like item for the male Omegas to help stop the leaking from the lubrication when they are in public.
How does pregnancy work?
Pregnancy is about the same as in the real world. For Betas at least. For the Omegas, everything sort of changes and flips their world around especially one who has never had a child before. The male Omegas chest will grow to around an a-cup to help feed their child. The Omegas will most likely be happy about having a child. The Alpha will become more and more protective of not just their Omega but also the small child growing inside of the Omega.
How does birth work?
For female Omegas and Betas, it works just as real life should. For male Omegas is where it gets complicated. Since their uterus is not in the normal position, there will most likely be a c-section, or Cesarean section. Basically they cut their body open and go into the womb, pulling the baby out that way. There are anesthetics that can be used to help numb the pain.
Where do they mate?
It all depends on the setting of the story and how cruel or nice the Alpha could be. The Omega may build a nest in a closet or small room to mate there. They may even mate in public places or in a car or something. It really all depends on what you are writing or where you are at in the story.
What is a nest?
A nest is usually a place where an Omega can be comfortable, whether if he is in heat or just having a bad day. It can be a closet or a couch, a small room or a bed. It will usually be filled with soft things, the most smelling like his/her mate if they have one. It usually makes them feel comfortable in all times, even if they feel they are about to murder someone. With Omegas being the small fragile creatures they are, it can help them rest. As they get closer to their delivery date, they will most likely spend more and more time in their nest with their Alpha.
Are there other ways to tell the difference between the three main roles?