Weakness, high BP etc. What it could be.

3 days back my mom had an attack at night. She had some severe head spinning and was seeing some double images for 3-5 minutes. She got very frightened. Earlier she was on some medicines related to her skin problems and some multivitamin for 2-2.5 months course. But she was not taking the multivitamins for the past 20 - 25 days due to unavailable medicine in the market. She had some occasional headaches and some gas problems too. But it was never unmanageable. So we immediately called a compounder to check for some vitals. He checked her BP and said it is 180/100. We took her a to a local government hospital at 2130 hours. He gave her some BP medicine and some gas medicine. She was afraid but is taking her medicine for the past 2-3 days. But she is feeling very weak and have frequent headaches after even a little effort. We are also worried about her health. We took her for a blood sugar test whose report will come tommorow morning.Now please guide us what to do and what it could be.