That is a pretty low E level. It's only just over the minimum acceptable amount for the benefits of HRT (250pmol) and may well not be enough for you as an individual.
For sure, try increasing your E. My low E symptoms included a lot of joint pain as well. But in my experience it's not a symptom which rapidly goes away, it takes a few months after you increase the dosage. (Unlike, say, hot flushes.)