Meeka, that is incredibly low, almost as low as my post menopause base level of 20 pg/mL which is 73 pmo/l. I had a year off HRT and several gaps to get an accurate base oestrogen reading and it has always been the same - it's a useful reference point. The post menopause range is anything up to 30 pg/mL which is 110 pmo/l so that gives you an idea.
Are you getting any relief on that level of oestrogen? The symptoms of flushing after certain foods and alcohol are a symptom of low oestrogen. You could consider splitting the dose by about 12 hours (morning/evening) and also splitting the location. You can use Oestrogel on your upper, outer arms too. You are applying a lot of gel on one location and that might not help. I take it you have 'real' Oestrogel and not Oestrodose?
What was Professor Studd's response to your blood tests?