Ovulation symptoms?

So, my husband and I decided to we would actively start TTC baby #2 in May. I'm not on BC and he usually just pulls out (early and finishes himself off). I have pretty bad PMS usually but not until the week before my period. I've never really experienced severe ovulation symptoms until this month. This week is supposedly my fertile week but I've been nauseous, cramping, back pain, pelvic pain, and having a strong sense of smell the past maybe 3 days. Could it be possible it's pregnancy symptoms? Or symptoms from the beginning hormones of conception before implantation? anyone else have "ovulation" symptoms and then find put they're pregnant?