• Is there a possibility for pregnancy?

I’m 41 years old and my wife is 36. Last Saturday on 10/9 we had protected sex. The condom did not break slip or leak as I pulled out immediately after ejaculating. I also filled the condom with water to double-check for any leaks or holes- there were none. Because of my age and mental health issue, we don’t plan on kids and I’m looking into a vasectomy. The next evening 10-10 she took a Plan B roughly 30 hours after intercourse. Her possibly ovulation window was 10/9-10/11. Her cycle is usually 27 days and her last period was 9/27/21. On Thursday she said she thought she had a yeast infection. From everything I’ve described, what are the odds she could be pregnant?