Gashead.
if you are in BG, see a local lawyer and get them to do a wee bit of paperwork and get the 5 year residency as a eu citizen. It only takes a couple of days in Dobrich and you get a lichna Karta.
You need a EHIC card, and a couple of bits and pieces. I used a local lawyer in kavarna but did it on the basis of marriage.
The requirements are here.
https://www.mvr.bg/gabrovo/%D0%B0%D0%B4 ... -their-fam