@riss81 - well done on your recovery and returning to work - You sound like you've 'got this' xx. However, Scanxiety is very real and we all feel it at one time or another xx ....
Try not to get ahead of yourself with the 'what ifs' ... as, all going well, they won't happen & it is putting yourself under pressure that you just don't need right now xx.
The 'Mindfulness technique' that @Cath62 mentioned is just keeping control of stuff going on NOW, not allowing the brain to wander off & ponder the 'what ifs' ...
Mayo has some good tips here:
https://www.mayoclinic.org/healthy-lifestyle/consumer-health/in-depth/mindfulness-exercises/art-20046356I just try to keep as busy as I can, leading up to it, doing things I love doing ... listen to music that you love ..... and take a buddy with you, so that you have company and support - and maybe go out for a nice coffee & cake afterwards as a reward for getting thru it ok xx
take care & all the best for your Mammogram xx