Why is ti that every night when am sleeping i sweet tremendously i weak up middle of the night to changes pjs and in the morning am completely soak ?

See MD : sweating to the point of soaking thru your PJs at night should be regarded as a sign of serious medical illness until proven otherwise. call your PCP to be seen ASAP. "Night sweats" can be caused by medications, hyperthyroidism (i see you take synthroid), tuberculosis (esp w/ cough or fever), anxiety, stroke, ... and the list goes on. see ur MD for proper diagnosis & treatment.