Fasting During Pregnancy

Hi. Im currently in my 14w. I tried to fast for the past 2 days and alhamdulillah not feeling so tired. Only a bit thirsty. But i still want to ask is it actually safe to fast at this stage? My colleague said that we might be feeling okay but we dont know how the baby is feeling.. Jm so confused because some said its okay as long as you are feeling good.