hello and welcome to hcm,
is right i feel.as your wisdom tooth is improperly aligned,it can cause food lodgement and therby decay of the tooth.it is better to remove the tooth at the earliest.otherwise the caries can spread into periapical region and can cause complications.
the extraction of tooth will be complicated,once the decay progresses.because it can cause fracture
of root due to decay in it.
it cannot be treated by filling and medicines as all these are temporary solutions and will worsen the condition.
take care.no need to become panic to remove the tooth.