Implantation bleeding?

Carly

So I was supposed to start my period two days ago and I’ve just recently come off my iud well I had a little bit of red blood on the day I was supposed to start my period only when I wiped that one time. I took a test at 10 dpo and it was a bfn and I’m now 16 dpo and don’t want to deal with the disappointment of another negative test👎🏻 thoughts?