Umm a couple weeks ago, my whole family(except my mom and couple other people) screamed at me just for an accident that i did, and i really got mad, especially to one of my cousins that was telling me stuff because i accidently doing something wrong. Now her boyfriend is in serious danger, and is in the hospital. I really dont know if i did this or not. And its not the only time that this happens, its happened whole bunch of times.
You're probably feeling guilty because you got mad. Such is life. When people die for example, we can be filled with doubts and regrets about our own actions. The kind of "If only.." thoughts.
I do believe we can create bad situations from our will, but I doubt this is what happened. You're probably just a nice person who tends to take a lot of grief, and because the one time you got mad something went wrong, you feel responsible. You're not. It's just the luck of the draw hun.
I don't know about the other times as you didn't clarify, but when your default emotion wavers around guilt, and people are often negative towards you, coincidences can be frightening.
Try doing a family healing spell, and practice some positive affirmation for your personal emotional wellbeing. :)
If you feel you may have caused it (now I'm not saying you did or not) you can perform a protection and healing spell for him. If your will caused it, doing something opposite with your entire will put into it will reverse anything done.
If bad things happen to those who make you angry or hurt you, but you never thought or desired anything to occur to them, you may also have to consider if you have spirits watching over you that are over protective. If you think this may be the case, you'll need to work on contacting the spirit(s) that watch over you and explain to them that it upsets you and is not approved of by you.
If you feel this may be you unconsciously throwing curses (known to many cultures as the "evil eye") then you need to work on controling your thoughts and emotions through meditation and increased awareness.
But remember what is done is done. If you cut someone they will still bleed even if you feel sorry for it. But by reversing what was done, it's the difference between continuing to poke at the injury and making new cuts, or stopping any further damage. He will still need to heal.
Lol, all it is, is a natural caster with a bad temper. If you have the "evil eye" you get angry and desire something bad for that person, then project that to them. Nothing special, very common. People used to believe any "dirty look" from anyone (especially elderly women) was the evil eye and they would use protective charms on themselves and their children every single day.