Apps saying period late by 7-9 days possible implantation bleeding 🤔

My partner and I are ttc and during my fertile time we had unprotected sex twice. So I was supposed to get my period on the 19th November. On the 18th I started spotting had a bit of blood no more than a spoonful with no clots. It stayed between pink/brown/orangey rust colored spotting until early Thursday morning and completely stopped. Then just a couple more spots here and there until Saturday morning. Last week was supposed to be the week of my period but I never got one. Typically my periods are like clockwork, it’ll start as spotting for a few hours then will become a full blown heavy flow with massive cramps and clots. So I took a hpt on Wednesday (11/21) but it came out negative. In the meantime I’ve been super emotional (I’m typically very stoic),

getting queasy, food tastes changes, my bras getting tighter and just typical symptoms. I believe this was implantation bleeding and I just want advice of those that went through it, how long do I have to wait to take another test now? I’m really hoping I’ll get a positive reading.