Be aware that in a basic infertility work-up, the only thyroid test they do is Thyroid Stimulating Hormone (TSH). Many Drs are under the misconception that if TSH is OK, then there is no problem. The full thyroid work-up is TSH, free T3, free T4 and thyroid antibodies.
Long story short- it turned out there was plenty wrong with me! Extremely elevated thyroid antibodies and I was riddled with endometriosis. These were only discovered after I demanded advanced screening tests & changed clinics to get a laparoscopy.
As for the needles, yes I do my own. I was a needle-phobe too, but I was cured of that after the first jab. The needle is short and very thin. Its always worse in your head than it is in real life, you'll see . Using an ice-pack on the spot will numb it and you'll barely feel a thing. Or as LittleDove said, you can use Emla. I can inject myself in a heartbeat, but still can't stand to watch someone else get a needle!
All the BTs freaked me out the most. The best tip I ever got was to drink a big glass of water before a BT. Hydrated veins are easier to find & the blood flows faster.
Sadly there will be more 'down' days than good until you come to terms with the situation and accept that you're simply on a different path to get to the same goal.
I hope you can begin to feel positive sooner rather than later .