Thanks for your question on Healthcare Magic.
I can understand your concern.
In my opinion, you should wait for few days before going tu doctor.
Since you are eating in abundance, this is the likely cause four your fluctuations in blood pressure.
So follow strict salt restrictions, avoid fatty and oily food, do regular
aerobic exercise like running, cycling, swimming etc for few days (10-15 days) and then again do blood pressure monitoring.
Your fluctuations will mostly reduce with these in 1-2 weeks.
If still there are fluctuations even after 1-2 weeks then consult your doctor and discuss about change in medication.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.