50% was reserved for the alpha and sigma males. Beta males were debuffed to 25%. Omega males were debuffed even further down to just 12.5% This was taking into account a fertile beta female. Alpha females could still get pregnant, but they could also impregnate females and omega males. A cock slipped out of their pussy like from a reptile's cloaca. Alpha females had the 25% impregnation debuff. Their implantation rate was 12.5%. An omega male's womb was made for an alpha male's cock and knot. There were special hormones released when sperm was present to welcome the new sperm to the eggs. It rejected beta sperm and killed it off quickly. Beta males attempting to impregnate an omega only had a 12.5% probability. Omegas had a special 100% buff during their heats. There was also a 50% buff to fertility between mates and a 50% debuff between a mated omega and someone other than that mate. None of them were mated. Even if fucked during a heat, Mitchel only had a 25% chance to impregnate. Compared to alphas, he might as well be shooting blanks.
Quite frankly, there were 2 major things that would keep Mitchel from having any chance of impregnating Ronan. One was on Mitchel's side. The other was on Ronan's side. For Ronan, it was his omegan womb. As a male, it had to be accessed through his ass. There was a secondary passage that developed about 8 inches from the anus. That development was what caused so much pain for an omega on their first few heats. When an omega was in heat, or stimulated by sexual intercourse or alpha pheromones the blood in that region rushed there. This caused that passage to swell open to catch the semen for the womb as opposed to it getting shot into the colon and intestines. Just like in females, there was a thin layer of flesh covering it called a hymen. It could be torn through via sexual intercourse, but that was the problem. It was 8 inches in. Betas only had 6.5 inch cocks. Mitchel could be balls deep and he would never brush against it. Having an alpha fuck him in the ass could do it. Their dicks were 8.5 inches. They could tear their hymens. Knots sealed sperm inside.
Until these major issues were resolved, it did not matter how many times they fucked. That is one of the reasons why it was culturally frowned upon to have beta male partners as an omega male. It was "selfish" to waste a gift you were given in a fruitless pairing. Truthfully, that gift was to get pregnant, be seen as a lesser class of citizen and be shamed for not being submissive. The hymen could be taken care of. When an alpha tore the hymen of an omega with no intention of mating, that omega was said to be "breached", Breaching was seen as culturally taboo. Because it was a conservative cultural view here, virginity was seen as a virtue. Alphas who did this robbed the omega of value to good alphas. Omegas that had been breached were looked at with suspicion of being slutty. Therefore, it was one more reason to look down on them. Barnett, Marcus and Thom had been breached in the rape warehouse the West High delinquent gang ran. Getting married in Aflen would be hard. The videos were going around. Ronan could be breached, but it would cuck Mitchel.
