If she's seriously trying to get pregnant, this is a weird era we're heading into.
She'll have to give up her implants which will mean she'll no longer be a proper "titty" streamer - I think she was pretty flat-chested before all of her plastic surgery, right? There might be some increase to her bust as a result of producing milk post-implants but they won't look nice - that includes thick, fat areolas (think Angie Varona today). Pregnancy will also take a huge toll on her figure unless she works like hell to get it back and has necessary surgery to get rid of the distension and stretch marks that will be seen in her waist and her belly - she might also opt to fix her tits post-breastfeeding. Since she had the plastic surgery in her twenties to fix her ugly duckling syndrome, she'll be itching to get back to some sense of how she looked before she got pregnant - count on plastic surgery is all I'm saying (both out of necessity and her craving to look young/attractive again).
Worst of all, she may use the pregnancy to produce some kind of fetish content, which may be crossing a serious line in the minds of even the most devout simps, orbiters and fellow streamers. Whether she's going to get pregnant for the sake of content or she's going to be an opportunist and use the pregnancy as a way to make money (implying she wanted to be a mother all along), that shows there's a darker and more nefarious motive Kaitlyn is hiding in that she would use her unborn son or daughter for personal profit.
But on the other hand, if there's some part of her that's sensible and decent, she's going to nuke parts of her online career because she won't have the ability to be online for hours streaming herself playing video games or doing hot tub streams (don't forget the losing her looks part) - none of this is mature adult/parent material fit for raising a kid. She'll have to look after her son or daughter and that's going to be the main priority - unless she decides to hire nannies 24/7 and continues her lifestyle as if nothing's changed while pretending to be a mom in places like Twitch. I could see her doing some fake slice-of-life mommy streams which brings us back to the evil using-her-kid-for-personal-profit part and pissing off a lot of people in the process - coomers will abandon her en masse at that point since she's not getting the tits out like she used to and who'd want to see them by then anyway (unless some of them have milk/preggo fetishes). She'd probably also have to pause streams at various points to yell at her crying kid to shut up or direct the nannies to move them to a room where they can't be heard (because a screaming kid in the background means fewer simps would want to stick around for her sake).
We've been talking about Kaitlyn hitting the wall now that she's entering into her thirties, but pregnancy will move up that timeline and cause her to lose the attractiveness that might be causing a certain number of simps to stick around even if her content is shite. Who knows what her career will look like after that even if I made some predictions. Whichever direction she takes, I think she's established through her actions over the past few years that she isn't above questionable behaviors if it means content/money/attention and some minimum level of controversy around her getting/being pregnant while trying to keep her career active into the next few years is a certainty.