Doctors, Specialists, and More Doctors...

So a couple of days ago I had blood work done because my Gynecologist thought my thyroid gland looked swollen. I'm not even really sure if they should be checking that but I'm glad she did. I found out that I have Hypothyroidism which means that my thyroid is not working hard enough which can cause a whole slew of problems including anemia, depression, fatigue, uncontrollable weight gain, and irregular period cycles (all of which I have at this moment). First off I am upset that my primary care physician did not think to test me for something like this when he put me on medication for depression or when he noticed that my weight has been steadily going up even though I have been increasing my exercise every day in an attempt to get back into my normal weight range. I have no problem saying that right now I am pushing 170lbs and that I should be at most 140lbs and I would like to be around 130lbs. My problem is that weighing this much doesn't feel healthy to me even though I have gone on a very strict healthy foods diet and have increased my exercise to 1 1/2 hr exercise every weekday. In addition to this new problem, the blood work had some abnormalities (which they wouldn't explain over the phone) and they wanted me to come in to talk about taking the BRCA test because of the abnormalities and because of my family history. This really freaks me out because I have had more than one cancer scare in the last few years, but my husband has actually really been great about it all. Now I have to see my primary care physician, an endocrinologist, my gynecologist, and a lab place for the blood work. That is WAY too many doctors for me and I really wish that someone could sit me down and explain everything to me in a better way than everyone has. I'm just not sure if there are things that I should know about all of this or if it is okay that I feel like a child lost in the woods.