How do you know you have a hemmroid?

Laura • Married 👼🏻 🌈 👶🏻 Pregnant with baby #2! 😆

It looks like a swollen little bump at the top of my stitches - it wasn’t there before and I’ve had it for a few days now. There’s no bleeding and I have some general discomfort, but that could just be from my stitches. I’m 3 weeks pp and don’t go to the doctor for a few more weeks. How do you know you have a hemmroid and what do you do for it to heal?