5dpo too early for implantation?

So all day today I've been having this tingling cramping feeling low in my abdominal/pelvic region. And I've been super bloated. I'm also 9 days away from my period. I don't usually get cramps like this that early before period, it's usually the day before sometimes even 3 days before but not usually. I might even be more than 5 dpo, that's just what my <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> says. I also do have PCOS, so it might be related to that idk.