hi guys i have a heavy thumping sound from the front drivers side wheel, especially when turning???

Check your wheel nuts, if they're tight place your hands on top of the tyre and try to rock it in and out. If the wheel moves/clunks it is probably your wheel bearings. It could also be a ball joint or disintegrated bush. Only a thorough inspection, which should be done ASAP, may tell for sure. As for example, a failed wheel bearing may be caused by any of the others and vice versa. The longer it carries on the greater the danger.
Paul