Am I blocked?

Ok i have learned my ex boyriends phone number From our common friend and o saved it phone but his contact didn't appear on my whatsapp contact list, i have refreshed and updated my people list several times and it still doesn't appear. First i thought he doesn't have whatsapp and asked my friend but she said he has it. Then I thought maybe it is a some technic problem and i deleted several people on my phone then added them all include my ex boyfriend all of them showed but hım. Now i think he blocked me, am I wrong?