What Causes Numbness In Left Hand After Having Heart Attack?

About a month ago I had a tia, I went to my doc. and had tests done they didn t find any damage at the time, they took exrays of heart and discovered on vein toward bottom of heart had closed one small vein but blood had rerouted to another small vein. My systems for that tia were my left hand went numb and was followed by my mouth going numb, this lasted only a few seconds and I felt a little dizzy. A few days ago both of my hands went numb and were followed by a headache I couldn t shake all day it felt like it was in the middle of my head inside. The next day I felt fine maybe a little tired. the doc upped my aspirins, I had been taking 81 mgs Im now taking 162. What is your opinion? I m 73, over weight, have arthritis through my entire body, for exercise I take water aerobics and can swim 20 laps without stopping, I live in mtns and walking is to hard, I had a ruptured dis 3 yrs, ago and have never recovered a lot of strength in my back which makes it even harder to walk, I use a cane if I have to walk a distance. Can you give me a opinion? My email is YYYY@YYYY