I was waiting for your reply.
I am very sorry for your symptoms.
Your blood pressure on oxygen meter is on low side.
The swelling of ankles is from accumulation of fluid.
As you have a history of high blood pressure, heart & kidney complications need to be checked for.
I would advise to take an examination by your doctor.
A few tests like metabolic panel, EKG, echo can be taken.
You can need diuretic & adjustment of your present medicines.
I hope this information will be helpful.
If you have any query, please feel free to ask.
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Wish you a healthy life.