Not sure if yeast or normal

I have a lot of discharge its white not clumpy or anything it just looks like white lotion. I'm 16 weeks pregnant. Not sure if I should make a appointment to see if it is yeast or not. There really isn't a smell either. But after sex I get itchy afterwards. I've been tested for stds so I know it's not that. I know that when pregnant your discharge changes so I dont know what's normal or not while pregnant