Confused.....kinda

Claudia • Expecting our first baby! We are over the moon and loving our baby already.
According to glow,AF was supposed to come 6/6 then it changed to 6/4. AF never came, so now it switched back to 6/6. Still no AF, I had spotting 10dpo (very light pink) only when I wiped. My boobs are sore to the point where I can't wear a bra. Could this be it? Nervous to test. 😕