Help please 🥺

rosie

So here's my glow calendar I've circled the only time I've had sex (24th October) as you can see I've had 2 periods since then that were regular and on time. Forward to this week, Wednesday I was complaining of ovary pain but thought it was ovulation pain, looking at my calendar but past few days I've now had what looks like implantation bleeding. Negative on the pregnancy test but I'm really confused why I'm getting this 😔