Suggestions..please

I initially thought i was starting to go through menopause but after a blood test my doctor has said that I am showing signs of an under active thyroid. The results were within a range that meant he didn't want to prescribe any medication and that I need to go back in January to be re-tested.

Anyway...to my question. I wondered if there are any natural remedies that people have tried to alleviate the symptoms? I sometimes feel quite normal and I find that these seem to come as attacks that last a while and then for no reason go away. I have not really done very much research on this so not sure if it's quite normal? I suppose I thought it would be years before I start on medication but won't be happy if I have to keep putting up with this