I always feel like I have a lump in my throat, and I am always tired?!

I'm far from a doctor, but it might have something to do with your thyroid gland.

Here are Some Symptoms for Thyroid Problems:
Symptoms of thyroid problems depends on the age of the person and the exact problem with the thyroid. For example, some symptoms of hypothyroidism in children include:

?Symptoms similar to adult symptoms
?Excessive fatigue
?Poor growth
?Poor school performance
-Weight gaim
Symptoms of hypothyroidism in adults include:
?Easy fatigue, exhaustion
?Poor tolerance to cold temperatures
?Constipation
?Carpal tunnel syndrome (pain at the wrists and numbness of the hands)
Symptoms of hyperthyroidism in adults include:
?Insomnia
?Hand tremors
?Nervousness
-Weight gain
Figure out if any of these things apply to you
Also, i am not a doctor so i may be off, but this might be what it is.
Hope it helps.

http://www.emedicinehealth.com/thyroid_problems/article_em.htm
http://www.thethyroid-diet.com/
personal knowledge
Mother has thyroid problem

You might want to have your tonsils checked.