So I currently have 3 children with my husband

Everytime we conceived it took about 3 cycles everytime.

Around 3 days after I ovulate I would start to get massive period like cramping, lower back pain, increased discharge etc. This only happens during the cycles we are trying even if it didn’t turn into a pregnancy. This is not in my head as I am hypervigillant about all of my symptoms and I never get these pains during a cycle we are not trying to conceive. I do get PMS symptoms but it is never 3 days after ovulation. Usually closer to my period about 5 days before.

Does this happen to anyone else during cycles they are trying to conceive? Do they get symptoms just days after ovulation? I wonder if implantation was trying to occur but failed for some reason. Thank you!