Being new to the game you probably don't have too much invested in your character yet. So, re-roll now, while it is cheap.
Go Elf, and choose Warden as your main class. Then, since you mentioned possibly some healing, choose Druid as your second. Knight/Priest is also a fair tank with some healing, but nobody likes Knights anymore. Champion is the new guy on the block, but to be honest, I have not seen any Champion/priests in action.
IMHO, that fits your stated conditions best. I'm sure others will speak up with other suggestions. But Warrior is not a tank, with the possible exception of Warrior/Warden; Warrior/Knight makes for a fair off-tank. Warrior's primary role is DPS. Tanks are Knights, Wardens, and Champions.
You might want to check this out
Warden Tanking - /Warrior or /Druid?