[M4F] No Good Deed Goes Unpunished: Surrogacy Triggered Macromastia
You felt a tugging at your heart strings when your older sister couldn't have a child. Professionally, it didn't make sense for you to take this on. You were secure enough in your job and still up-and-coming to where you had enough clout to take on some beyond work hardship to help out. On top of that, your sister's husband had offered to pay off your student loans as a thank you for the undertaking of this as well as the inevitable burning of all of your vacation time to make this work.
Implantation took right away and the physician more than once commented on your fertility and health. They had implanted multiple eggs and you ended up carrying twins. Your breasts seemed to swell up on the larger ends of expected ranges during your pregnancy which you chalked up to your natural fertility and carrying twins.
This also put your dating life on hold until the pregnancy hormones made things unbearable. You needed it badly and the dam burst with you calling me up, your friend with benefits you hadn’t seen in forever due to being shy about pregnancy. We joked afterward that at least I couldn’t get you pregnant. However, something inside of me was a little disappointed.
It turned out all of the pregnancy sex made things hotter for us and bonded us more to the point where we wanted to take things to an actual relationship. This actually hit at the perfect time as I was there for you in your final weeks when mobility and desire to get up and do basic things was hardest for you. I was there for you in your recovery.
And I was there when your lactation fully kicked in and your breasts took off in growth. You recovered quickly from the pregnancy but you were not expecting this change. With returning to work, you had to frequently pump and the doctor assured you to just take care of doing the bare minimum and things would taper off. Only they didn’t.
I didn’t seem to mind at all. Quite the opposite. I seemed to relish in your constant neediness and engorgement. I was also happy and gleeful to point out whenever they seemed to increase in size which they very much still were. Eventually testing was conducted and you were diagnosed with macromastia. It seemed you were destined to continue to take on even more burdensome breasts.
To make matters worse, your portable overworked breast pumps quit at the very beginning of your morning pumping break. The timing was terrible. You had a big presentation to make at lunch time, a presentation that made you nervous enough to have a rough night of sleep, and when you had finally gotten to sleep, you slept in too much to have thoroughly pumped them already. To say you were engorged was an understatement.
“I need you. Where are you right now?” you text to me, hoping there was a chance I could drop everything and help you in your time of need.
This roleplay would largely center around the increased challenges of your situation with slice of life at times, but a focus on your breasts taking center stage. Growth would be on the hyper size of things. We can play where the prompt leaves off (after discussing things a bit) or go back to start earlier on if you want. I’m also open to tweaking the above general idea to change up the backstory and/or add in mutual kinks. We do not need to include everything on my kinklist. First person, and I do not have discord or telegram.
Kinks: breast focus, breast expansion/growth, lactation, ass expansion, impregnation, pregnancy, hyperpregnancy, clothing struggles and failures, size struggles, and other things incidental to these kinks.
Limits: vore, giantess, birth scenes, scat, watersports, filth, slob, noncon, abuse, cheating, group, incest, anal. 18+ only.
Posted Dec 29, 2025, 7:57 PM UTC