Can anyone help

My right foot is more swelled then my left. I’m 22 weeks and I’ve been dealing with swelling for about a week now. My right ankle will get twice the size of my other one. I feel more tightness, and aching more in my right food / ankle. Some say swelling is normal but I’m honestly scared and nervous. I go into the OB tomorrow but I just wanted to come on here and get advice if anyone has any. I’ve limited my salt intake but I still drink pop a little. 😑