Hello,welcome to HCM,
let me explain your symptoms;
1.what you are experiencing is a vaso-vagal shock
.this means that the nerves from affected/stretched area send pain and distress signals to the brain & results in fainting
2.also you should stick to the tried and tested pads ,because the symptoms will recur .
3. considering the risk-benefit ratio of using tampon to that of a pad,pads are better for monitoring soakage and hygiene too.
take care and don't be nervous