Different forms of hallucinating happens with PTSD, scents, feelings, bodily states, images, sounds. It is normal. Sad thing is we are generally do not admit it thinking we have lost it for sure "this time". Example one that plagues me is smelling a fire burning. I was so scared to tell my doc. Even though I have no memory of the fires but there were many confirmed by my mother; as my bro is an arsonist and has been in prison for it as an adult. When I am under extra stress it is worse.

Extra stress that you may not even be aware of can put you in that jumpy state as Bec described. Just trying to function coming to terms with having PTSD and what it can do to us (hence since this just started after your diagnosis) can pull things up that you may not remember, or put you in "over drive" like it sounds you are describing ie. hypervigilance.

This does not mean you are ready for the padded room, and being scared of it and that thought instead of accepting it may actually be what is making it more intense. I hope it eases off for you soon and I hope hearing this and knowing you are OK will help you.