Help!!!

So I got my bfp ( quite a few to make sure ) I’m huge already because this is pregnancy number 6 ( baby number 4 ) and I feel so nauseous.... when should I tell people? I’m worrying because I had a chemical at (roughly) 3 weeks in August. My tummy is already getting harder to hide and people are already starting to notice plus I’m super tired pretty much all day every day 🌈💛🤰🏽