Hello everyone. My daughter is almost a year old. Could you please tel…

Hello everyone. My daughter is almost a year old. Could you please tell me what you think about our pediatrician saying it's teething ?. I feel like it might be stomatitis or something similar. The gums have swollen up in two days. It's also swollen on top, barely visible from the swelling because of the teeth that are coming in. She sleeps poorly and cries in her sleep ?. If it's teething, how many more days or weeks will it last? Share your experience ??.