Weird symptoms

I’m on cycle day 17, but starting on cycle day 15 I started having pink spotting, very light and not enough to fill a light tampon or even a panty liner, on day 16 I was still spotting like this and started having mild to intense cramping. Today is day 17 and I’m still having spotting but it’s only when I wipe and it’s light pink and with mucus, and I’m still having cramping. My cycles not due for another 2 weeks and I usually have pretty heavy cycles so I don’t think this is my period. Does anyone have any insight? Me and my SO aren’t actively trying to prevent pregnancy and we’ve had unprotected sex on cycle day 8, 9, 10, 11, and 14 😅so could this be a sign I conceived?