b4 preggy was 36kg le...super underweight, hehee.
my pregnancy is fine so far, only had backache like 2-3 times during the 2nd trim when I stand for too long, other than that, it's ok.
i used to exercise occasionally last time b4 preggy so maybe it helps.
gynae asked me to put on 2kg max per month else, wait bones cannot take it.