Haha with twins, I barely had the energy to get out of bed, let alone do yoga! But seriously, wait till the 2nd trimester and keep it very light and gentle.
Usually, doctors suggest starting after 14 weeks once the critical first phase is complete. Make sure you only practice under a certified prenatal yoga trainer, don't just follow random YouTube videos.
Beta, don't rush into any exercise without your doctor's green signal. Every pregnancy is different, so let your gynac confirm if your placenta position and everything is fine first.
I totally understand how eager you are to stay active for your little bundle of joy! But please wait till your first trimester is safely over and ask your gynac first.
Actually, I am planning to conceive soon and was wondering the same thing. Do we need to do some specific pre-pregnancy yoga before starting prenatal yoga?