Sick Female Guppy

When we went to get some more endlers for the second second tank we included some females, one of the females isn't a proper female endler as it's a golden colour and it somehow snuck its way into the bag but we decided to keep it anyway.

This particular female got very fat and initially I thought she was pregnant but she didnt have a gravid spot as such, then I thought maybe bloat, she has a voracious appetite and I was worried she'd grabbed too many bloodworms so I stopped providing that treat. This afternoon I noticed she has 2 small lumps on her abdomen, they're the same colour as her skin and she seems to have similar lumps internally. I'm going to see if I can get my son to take a piccy to show you but does anyone have any ideas?