So confused right now!!

I had 2 postive pregnancy tests 17 days ago (3 days before period was due) from then all I am getting our negatives 😢

I spoke with my GP and she said it sounds like a chemical pregnancy. So I ofcourse went on to read about this and it says some women don’t realise they have conceived that month as their period just comes as normal or a few days later than usual. Where as I’m 14 days late and still no period? Has anyone experienced a chemical pregnancy and can give me some advice please?😢😢