Thank you for your replies guys. When I first made the transaction it also wasn't showed in all blockchain explorer at the begining. It seems like it the confirmation process restarted again yesterday. The question is Why ? My btcs aren't supposed to come back to my wallet after the transaction stays unconfirmed fo a long time ??
I made a transaction 2 weeks ago mistakenly with a very low fee rate 8sat/B and it didn't get confirmed after days. I think it restarted the confirmation process again yesterday, i don't know what's happening, why doesn't it get cancelled after all this days ?