General Whelping

Help! My bitch is due

I have a staff she is 61 days and she has clear fluid coming out, when she sits down there has been wet patches left behind here is no smell and is not wee she has only eaten half her food for the last couple of days and now she has eaten all her dinner, temperature has been around 38, lowest yesterday was 37.0 today is 37.5. So was woundering if she is starting her first stage of whelping she also keeps licking her belly.