kellyjo

Feeling the way you do it sounds like you aren't riding in a relaxed manner. Ive been there and as soon as you start riding with a tense body and negative thoughts it just starts to go wrong.
I suggest maybe a few slower rides on your own and get back to thinking about basics.

A few months after my test I started having trouble cornering, I was coming in too fast and braking too hard causing the bike to stand up and go in a straight line. All it took was a 5 minute chat from my trainer who told me to get off the brakes, use engine braking to slow and only accelerate once in the corner.
I tried it and it made a huge difference. He also made me tell myself out loud to relax, which also helped, I didnt realise how tense I was getting. Its something I still do to avoid getting 'death grip'!!
If you can afford it then maybe some advanced training will help. And get your bike checked by someone in the know to put your mind at rest that all is well with it.
If you set out thinking somethings going to go wrong, then thats whats likely to happen.

Good luck, KJ x