When shall I ring DR? Help!

Jess • Wife in 2019💍🤵👰. Mum to 13y - 💙 , 1yr - 💜 Stepmum 15y & 21y 💙💙 expecting No.5 😆 Nov '22 💚🤰

So I had 3 positives last wednesday.

But negatives since :( presuming Chemial. No cramps or AF symptoms.

I'm currently on CD 28, of a normally regular 25day cycle!

When shall I speak with my GP?