It sounds like you are having symptoms that have a big impact on your ability to carry on with your life. That is totally understandable, given what you have been through. A lot of people develop PTSD after having been through situations that are too stressful for normal coping to handle. It wouldn't surprise me if everybody has a point at which things are too much, and PTSD would result. Not everyone gets pushed to and over that point like you have. So, it is perfectly reasonable for you to feel the way you do after what has happened to you. It's also more than you can reasonably be expected to just deal with on your own, and treatment for PTSD can help a lot. I would recommend talking to a professional about this.