Hi and welcome.
Yes they are considered absolutely normal. 5 days before and 5 days after your expected date is considered normal and cycle length can vary depending on physical activity diet and hormonal changes so nothing to worry about.
Let me know if you have further questions.
Please do not forget to leave a positive rating by clicking on stars on top right corner.
Wish you good health.
Thanks for reply.
we can not judge by this time of your conception.