Mountain Springs

I got drunk during the Annual Alpha Conference and accidentally slept with Anton, the Alpha of the rivaling clan!
I managed to sneak out of the hotel so that I wouldn't embarrass the pack. I told no one other than my younger sister, although I did not mention who he was. 
The present: Three weeks later, I reached adulthood and was about to take over as the pack's Alpha. I would be transforming for the first time at eighteen, awakening my inner wolf as everyone watched. I was on my knees, using all my strength to transform… But nothing happened. Had I failed? 
Not resigned to my fate, I tried again. But that was when my heart hurt as if someone was grabbing it and my belly heated up as the rest of my body screamed in pain… I drop to the floor, unconscious. 
When I woke up, the first words I heard were from the doctor.
"She's pregnant…"
In our world, any werewolf pregnant with children not belonging to their mates were treated as pariahs, oppressed by one and all. I did not dare to look up at my parents, who would obviously be disappointed. 
"Baby," said my mother. "Just get an abortion, and we'll continue the ceremony. You are still the Alpha of our pack.
"Ellie," said my father. "If you don't get an abortion, you will never be my daughter ever again.
As much as I loved my family, I was the only one my child could count on. That was why I decided to leave home.
Thankfully, my younger sister managed to get Anton's number, but the only thing he said over the phone was, "It's been so long. I can't remember what really happened."
So, from now on, I would be a single parent to my child! I swore to give him the good life and to help all pariah wolves find a place to settle! 
Years passed, and Anton was almost thirty. With his father's insistence, Anton finally found himself a mate… But who could explain why she was so disgusted with him?

Pregnant with Enemy Alpha's Baby

I kept looking at Walter with suspicion, but he had already begun to calmly taste his coffee.

"Mr. Walter, I am facing deadends on every lead in my investigation of Aidi, as if someone has been intentionally hiding something from me." I did not give up on trying to convince Walter.

"I'm sorry, Mr. Anton. I can't help you any more than this. If you insist on knowing, I suggest you think about it from a different perspective. Maybe you will notice something new." Walter also looked troubled as he offered his opinion.

It turned out that my visit today had been futile.

Since there was nothing more he was willing to say, I thanked him dejectedly. "I apologize for the inconvenience, Mr. Walter."

Clues