no. pagmamanas may happen during 2nd trimester but mostly in 3rd. it could be due to hormonal change, preasure from lumalaking uterus causing fluid build up, etc. i had manas in my 2 pregnancies. nababawasan kapag gising sa morning, then build up ulit in the afternoon. mawawala ang manas after giving birth. you can ask OB dahil may severe edema like may iba pang symptoms.