Second stroke

I suffered my first stroke in July 2019, whilst in Canada on holiday but care was excellent and clot removed from my neck. Thought I was doing OK, tiredness getting better and learning to adjust to memory problems. Also stopped smoking. Then out of the blue I had another small stroke 10 days ago which affected eyesight and balance. Spent 5 days in hospital, came out and next day had a TIA.I am 65, fit and well previously, perfect bmi. Tests so far not shown up anything. Really worried this will keep happening and maybe lead to another major stroke.

Anyone else had similar experience and any suggestions gratefully received.