Chronic coldness (especially extremities), low body temps, & low energy levels are common symptoms of Hypothyroidism. Check thyroid readings (T4 &TSH) on your blood tests.
Feeling tired everyday can be due to low B-12 and/or Iron levels in the blood. Check readings for RBC, B-12, Iron (SI), Ferritin (SF), & Transferrin (TS or TIBC).
Chronic fatigue can also be caused by low Serotonin levels in the brain, resulting in depression, which folks suffering with parasite infections commonly experience.
That's why doctors routinely misdiagnose patients with "Delusional Parasitosis" & prescribe antidepressive meds (SSRIs) as the magic bullet cure! These meds may lift your mood somewhat, but are just a big dose of BS in curing the underlying parasite infection!#?
Your other symptoms, e.g., teeth grinding, abdominal discomfort, etc, are common signs of parasites. Your weight loss is a common symptom of tapeworms.