ovulation cramps

Kelsey • 25, married, mama to an Angel, FINALLY pregnant after 3 years TTC after MMC

so I got my positive OPK this morning. this evening i started getting heavy one-sided cramps and a tiny bit of spotting. this is the first time I've had either of those happen around ovulation time. good sign? I know it's wayyy too early to tell if I'll get pregnant but is it a good indicator of my fertility?