Actually since 2006 the TSH range should be 0.3-2.5.. which would make you hypothyroid by the latestr A A C E and N A C B standards.
If that is your FT4 range:
Free T4=1.2 (0.7-2.0) You are at 38% of the normal range. Optimal range for childbearing ager females is 60-80% of range. For post-menopause 45-70% of normal. By either standard you are suboptimal in T4.
T4 levels are only half of the picture. You need to know your FT3 levels as well.
The most common cause of hypoT in younger individuals is Hashimoto's thyroiditis. You should get TPOAb, TGAb tests run to check on that.
Also I have a thread series compiled with a lot of information on thyroid care basics. The week 2 thread is the one that can get you started on the fundamentals. Reading through it might help you out.
I will paste the link here shortly. Thyroid care concerns around the world - week 2