The ups and downs of TTC

Megan • Trying for our third! First baby a miscarriage, chemical then rainbow. Second baby 9 months of trying 4 with clomid. Hoping for a quick easy pregnancy for #3
I just received some blood work back I had done afer my 2nd miscarriage and everything looked good except my TSH level went up again! It was 0.9, went up to 1.5 when I was pregnant now it's up to 2.7. Which is above the 2.5 my doctor wants to see. 
​I got good news from my doctor that we would start progesterone at my next positive test but now my thyroid is up again. I feel so defeated this is the must frustrating thing I have ever been through. Why can't things just work out!!