normal - i actually lost weight in the 1st 3 months of my pregnancy. but luckily no morning sickness.
tiredness is also normal too coz ur body needs to produce more blood to support u and the baby, which means u needa use more energy than before. ur body will adjust to it after some time. dun worry.
the discharge (分泌) is normal as well, as long as there's no bad smell and it's not itchy - otherwise it might be yeast infection. but dun worry it's pretty common for pergnant women to have that, just go to the doc n they'll fix it for u~~!!