Yaz Oral Contraceptives, Two Fingers, Speech Communication, Month and a Half, Ct Scan

I have been taking Yaz for a month and a half. The only medication I have been on in several years.
At work yesterday, my head started getting foggy. And my perception, was all messed up. After about 15 minutes of this not getting better, I started to lose my speech communication. I couldn't finish sentences or words. Stuff was jumbling together. In my right hand, two fingers went numb, then the whole hand. A client ended up driving me to the ER. I tried to call my receptionist, but I couldn't get the words out, my client took the phone and told her I was going to the ER. By the time I got to the ER, feeling started coming back, and I could communicate, in full sentences, if I paused between. By the time I was checked in and saw the doctor, I was able to tell him all that happened. With no problem, then a huge headache came on.
He wanted to rule out stroke, so did the CT scan and MRI. The nurse had some trouble getting blood from me. She kept mentioning that the blood kept clotting. The doctor sent me home saying my brain was perfectly healthy, and to go see my regular doctor.
A friend told me it was the birth control, because she could not take it, as she has lupus, and could have a stroke. She said it causes clotting. All of this was making sense to me. I looked up the side effects I had and found the "stroke symptoms", listed as rare, on Yaz.
My opinion of what happened, I had a blood clot that ended up passing through, and it could have become a stroke.
Another thing I read, besides the clotting. Was that oral contraceptives increase the potassium in your blood. I had been eating a banana for breakfast, 3 mornings in a row (the third on the day of this episode). The added potassium, could have been related to this episode.
How is anyone to know they can't eat something like "bananas" with birth control? I certainly didn't.
I am afraid to try any form of birth control at this point.