Very low estrogen

I have CFS/ME, likely partly due to under eating and over training and too much stress for too many years. My latest results show very low cortisol but also menopausal estrogen levels (E1 and E2). The rest of my hormone profile is fine so hopefully not menopausal as I’m only 37 but ttc for 14 months now.

I take letrizole and vagifem but running out of money for private treatment and wondering if anyone experienced anything similar and what they did to increase estrogen!?!?