⭐ Merited by pooya87 (2)
Or did you put your BIP39 mnemonic into an "offline version" of Ian Coleman (downloaded and run on a computer not connected to any network)? That is still "bad", but not as bad as typing your mnemonic into a website. 
Hopefully he entered in into the offline version downloaded from the right place. But OP is using Coinomi - a closed-source hot wallet that was caught sending seed phrases to Google servers to check the validity of them. Coinomi being a hot wallet is bad enough, the way they are/were handling user data is even worse. No matter which of the two he did, he should seriously consider using a better client.