C-section question

Ciara • Double c-section boy mom: 2019 and 2021

So I’m 3 weeks pp today and I saw my ob two days ago. She said the incision looks good but it’s swollen. Just asking as a ftm if that’s normal?

Also, at the 6 week f/u we’re going to discuss BC options. She suggested mirena or paragard. I’m scared to death of the iud moving. What have or what will you all be doing as BC? Vasectomy is not an option, this is only our first.