Cool you found this forum. With regards to knowledge of the human body it is more so that we work with understanding how our mind functions within/as the human physical body. Therefore we don't claim knowing more than current medicine.
What we do here at the forum is that we write and share our writings of self-supportive tools that one can apply to become directive in one's life, such as learning how to stop fearing, how to stop limiting ourselves in our day to day lives and so develop self-supportive tools which consist of writing, applying self-forgiveness and self-corrective statements, which you can read around here in all the blogs shared.
In terms of trauma and the physical consequences thereof, you definitely have to resort to a medical practitioner/professional.
Therefore what you can do is develop a process of self support to, for example, work with the emotions you're experiencing such as loss of interest, social withdrawal, depression, irritability - these are emotions we do work with. However there's a complete different scenario when you have gone through a particular traumatic experience or if you are already in some kind of medication and these have emerged as secondary effects - so if you can share more about yourself, your experience, then it will be easier to get to know when exactly you experience this, how, how long, in which situations, etc.
So, in terms of your headaches - best to get yourself properly assessed by a medical professional. About the traumas, you can work with it by using the tools we apply here, so my most immediate suggestion is to read the blogs here on the 7 Year Journey to Life
thread for example.
I would also suggest you try out the DIP Lite Free Online Course
wherein you learn - step by step - how to develop these self-support tools.
So, make yourself comfortable by reading through what is shared here in this forum. In this, I do emphasize that we do not claim any medical expertise on post-traumatic experiencdes, therefore it is suggested you support yourself with the tools shared here along with a continued process of medical assessment.
Welcome to the forum and enjoy sharing yourself