No pms 3 days til af???

I always get PMS symptoms seven days before A F. Always!  Just got news that my husband has fertility issues that will make it difficult to conceive but not impossible. So I stopped paying attention to my cycle. Was thinking I must be a week and a half away because of having no PMS symptoms so I checked my calendar and I'm due in three days. No cramping no boobs hurting or enlargement no grumpiness. Has anyone else experienced no PMS symptoms and ended up with a BFP?