Problem with reports about HRT is they are usually done by people at the very beginning of the therapy and usually they're really under the psychological/somatic effect that produces the fact that they finally start their way towards transition.
But there do exist people that obtain excessively strong mood swings and some tendency to depression thanks to some HRT regimes. This is normal biological stuff, and possibly related to the reason actually lots of ciswomen are on SSRIs and other anti-depressants (to avoid and cope with this phenomena).
You should ask your specialist to fix your medication, and if needed, talk to a physchiatrist.