If your friend knows your fear that is NOT a friend!! I would never tell ANYONE I dreamt something like that! (My friend did that to me one time when I was about 10 and I worried for so long after that!) Dreams mean nothing, but to someone with anxiety, OCD, or what have you it gets blown out of proportion.
I knew this lady that SWORE she'd never make it to 30, she had dreams of herself in a casket, etc.... then around 35 she began to swear she'd never make it to 40, planning her funeral, etc. Then 50 - she is now about 62 and stopped all that.
You are fine - all your tests are great, try to relax and don't let mean "friends" ruin your life.