Not a story, but VIPcomics did this exact thing in their "vipcomics Issue 4" -
https://vipcaptions.blogspot.com/2015/0 ... ics-4.html. If you are downloading the zip, it starts on page 401.
The guy goes back and forth a few times in the time machine and has a few different changes - one of them being his dad marrying an african-american woman instead of the mum in his original timeline. VIP aims more towards TG themes, not sure if this is what you are looking for, but was the first thing that popped into my head..