Pregnancy hormone

I know it's known that a person will not have any pregnancy symptoms until implantation but I can't help but think that if ur egg has been fertilized that some sort of hormone isn't released and if we are sensitive to our bodies we can detect that we may be pregnant before implantation. Am I wrong to think that? My boobs hurt right after ovulation and that's abnormal for me, normally it takes a week for them to be sore. Thanks for the comments! 😊