Do you happen to know the result of the TSH (Thyroid Stimulating Hormone) test you had? Doctors tend to put all their faith in the TSH test, but that's not even a thyroid test; it's a pituitary test and is an indicator of thyroid status, at best. It should not be used as the sole parameter for diagnosing (or ruling out) a thyroid condition.
Every time you get a TSH test, you should have Free T4 and Free T3 tests done, as well. It would also be good to get thyroid antibody tests to rule out (or in) Hashimoto's Thyroiditis, which is an autoimmune condition that destroys the thyroid. Hashimoto's is the main cause of hypothyroidism in the developed world and can be present, and affecting your body, long before TSH goes out of range.
Do you have any other symptoms of hypothyroidism? There are over 300 actual symptoms, but some of the main ones we see are the weight gain, such as you have, constipation, fatigue, low heart rate, cold intolerance (you're cold when others are warm of comfortable), muscle/joint aches/pains, hair loss (all over the body), especially, the outer half of the eyebrows, puffy/swollen areas under the eyes. As I said there are a lot of symptoms because the thyroid controls metabolism, heart rate and other body systems.
Globulins are proteins, produced by the liver. High globulins can indicate an autoimmune condition or infection. High globulin can also indicate cancer, but they'd be much higher than yours if that were the case.
What other blood tests did they order for you?
You said you did some blood tests, did you get your thyroid checked?