Consecutive Unconsciousness. Whole time.

My wife suddenly fell unconscious on the floor. This happened at night when she was coming out of washroom. I immediately grabbed her and tried to put her in a comfortable straight position. I'm not sure if I saw symptoms of a seizure or spasm. But both her hands got twisted during this episode and eyes were open but totally distant, unaware and on the sides. I massage her feet, shook her body, shouted her name, sprinkled water, tried to correct the body posture, etc the whole time. Thankfully she recovered in 4-5 mins. Gave her water and ors afterwards. She then later told me that she woke up to take a leak as she felt like it, but couldn't do it. After that during handwash, she started feeling dizziness and fell on the bathroom floor. She wasn't completely unconscious. But she didn't remember that she fell unconscious again when she came out of bathroom. This is the first time this happened and she has no prior medical history. Please advise. I'm quite worried and terrified for her.