12 wks pregnant,walang appetite

I’m currently 12wks pregnant with my 3rd baby,nagwoworry ako kasi sobrang wala akong appetite. I’m trying to eat anything kapag nagutom ako pero most of the time,water lang gusto ko. I don’t want to do anything also. I missed my dental appointment and prenatal check up because wala talaga akong energy to do anything. I can’t take my vitamins din kasi nahihilo ako at bumabaliktad sikmura ko. For those who experienced this,okay lang ba si baby nung lumabas..? First time kong magkaganito while pregnant. I’m usually a heavy eater pero this time,wala talaga akong gana. I’m planning to visit my OB soon pero I wanna know sana what you did para naman mejo mag okay ang appetite. TIA #advicepls