One of my past piggies had a big cyst removed from her side. I found it as I was delivering them to my parents as I was going camping for a week. Cue a dash to the vet and cancelled holiday. After the operation she had stiches and staples, so I was advised to spilt her from her cage mate (this was about 8 years ago). She wouldn't eat, drink or move, then she pulled a staple out and had a flap of skin, with muscle showing underneath (horrible). Rushed back to the vet, who put another staple back in. 15 mins after I got home she pulled it straight back out! Luckily the skin stayed in place this time, so the vet said leave it. I eventually let her cage mate visit (under supervision), she perked up straight away and started eating. Long story short I put them back together, she healed up and lived a long and happy life. I spent the week worried sick and crying, but got through it.
I suffer with anxiety, but this experience taught me I can get through a piggy illness.