hi there Michael
read your query
many aspects are related to it
1. you are a hypertensive.
have you bp rechecked during and after these episodes
bp is a dynamic thing
and maybe your old medicines are just not enough now
2. you have a sinus problem
so you might have a
sinusitis causing the headache
steam inhalation can help there
3. breathless while doing what
if its breathlessness while doing anything significant
we dont have to worry
if its breathlessness on rest, or on less than usual work
you might need a
echocardiography with a chest x ray
4. all the symptoms can be explained by
anxiety disorder
are you sure you dont have any thing to worry about?
relaxation tecniques might help
those medications need monitoring and are usually not available without prescription
so meet a local dr there
5. you have a new onset headache
it might need an mri