Yes, it does sound like it. Once you have PTSD, it doesn't go away. If you have been diagnosed especially, then you can be sure that any additional stressful events will be categorized the same ill-way the initial event was. (This is part of what makes PTSD such a bear of a disorder, that it changes your brain chemistry and it takes hard work to retrain the brain. The longer you take to work through the trauma, the more difficult and the longer you build a bad habit (or your brain does) of how not to react to other events.)