Anyone knows if I just tested positive 4weeks can I still do regular yoga ?

Yup, there's prenatal yoga! I'd check in with a gynae first, and maybe take it easy for the first trimester - and find out what positions are not suitable for pregnancy :) Congratulations!

Yes you can still do yoga. But do start to look for prenatal yoga instead. Many continued yoga till they delivered.

Yes, you can. Just inform your yoga instructor that you are pregnant as you are not suitable for certain postures.

Yes totally. Do inform the instructor of your latest surprise.

Absolutely. Pre netal yoga. btw congratulations!