Help I’m so confused

Nina, mum of 4 🌍 👶🏼 & 4 👼🏻, trying for 🌈 no2

Hey ladies , so I’m cd19 of 28-29 dc, my last period was different than usual still lasted 4 days but only 1 heavy day, I know age plays a factor but this cycle I never got a peak day on my opks which has never happened before , so don’t know if I ovulated this month, we only managed to bd once cause of our 5 year old having sickness and now I’m cramping and have just been to the loo and have this (pic below)

Period not due till 11-12 feb , could we be lucky and I did ovulate and this is implantation bleeding .

Many thanks for taking the time to read such a lengthy post xx