The coach's voice made Erika jump in surprised and she immediately started pulling back from Emily, but a hardening knot pulled her friend along, the jerking motion making it swell even faster. It was stuck inside!!!
"AH! Erik..." Emily yelped in pleasure before Erika moved her right hand, still sticky with Emily's fluids, over her friends' mouth to muffle her sounds.
She tried to push Emily's panties under the sink with her foot to hide them, then stumbled back with Emily in a toilet stall, shutting the door as she fell on the seat. Emily was sitting on her, squirming on her buzzing knot and clinging to her own breasts as if it would help her making less noise.
Erika kept her hand over Emily's mouth, trying to catch her breathe to sound as nonchalent as she could.
"Just using the loo!" She yelled in her husky voice. "We're almost done!" she added, as Emily started hungrily licking her sticky fingers. She heard steps move away from the room's door.
Emily arched her back as her insides started contracting again around Erika monster member, hit by another orgasm. Erika hold her friend tightly, two fingers in her mouth and an arm around her body, her knot anchoring Emily firmly as both were trembling feverishly in bliss.
Suddendly an incredibly pleasurable throb ran through Erika's contracting balls and along her dick, and she started shooting heavy bursts of thick cum in her friend. "EM... GNH!" she let out lewdly, jumping on her feet in surprise and placating Emily against the stall door.
Both girls whimpered, Erika's hips bucking wildly, and the door opened wide; they both fell on all four in the middle of the room, with Erika's knot still keeping them attached as her spasming cock was going through mechanical motions, releasing surge after surge of canine seed.
Emily hit another orgasm and arched her back again, letting out high pitched moans. Erika could not control the flow of semen escaping her cock, and she was clinging to Emily's body as hard as she could as she was filling her with her goo. Under her hands, she felt Emily's tummy stretching. Fuck. First Melissa, now Emily? Did she just impregnate her friend?
Her heart was pounding. A wave of anxiety came over her as she came down from her climax. Her knot rapidly deflated as her member was shrinking and turning human again.
Erika slid out of Emily and covered her groin, shuffling back inside the stall to lock herself before Emily could get up on her feet.
"Erika a... are you alright?" said Emily in a small voice as she was stumbling on her feet.
"Yes, I'm... I'm sorry Emily, I hope I didn't frighten you. I'll explain everything to you but this isn't the right time... Please go back to coach and say everything is ok! I'll be back in a minute", Erika blurted out.
She heard Emily sniffle a bit and putting on her clothes again before exiting the room without a word.
Fuck... Shooting goo in her friend was how she got Melissa pregnant. And her penis wouldn't shrink past a one-incher after that, leaving her a little less female. What would happen now?
She looked down between her legs in panic.