Thanks for your query.
You should consult an ENT specialist
at the earliest.
It appears as if the ear symptoms are because of your recent flu and hence the sinusitis
could have caused it.
However, during early pregnancy
, it is always better to go for a check up, and not take any medication by yourself.
Concentrate on improving your general diet, nutrition, immunity and well being.
Take vitamin C
daily and take regular antenatal supplements as advised.
Avoid excessive travelling and exposure to pollution.