Hey @Trikki2,
Absolutely normal. Hopefully you can relax a bit as treatment goes on. I found that once I got into a routine of knowing the cycle of the treatment and realised that I could still function quite ok on most days the stress lessened and you become a bit more chilled about it. Just another day at the office so to speak.
I found keeping as busy as I physically could was really useful and distracted my brain from constantly thinking about treatment and BC.
I also took a lot of photos of anything fun we did along the way. Days out, beautiful sunrises, parties, family trips etc.
That way when you look back you can see all the good things you did in amongst the not so good. This was really beneficial. Instead of just looking back and going well that was a shit time. I could see how many good days were in there. Made me feel better about it and it gives you a good sense of strength when you can reflect on "Hey, look at everything I did while going through that"
Every body deals with things in different ways. You'll find your groove lovely.
Keep on poking along and the end will appear sooner than you think.
All the best xoxoxox