New to Carer Responibility

So this is new to me and after reading all of the intro guide material provided by the clinic where my sig other is currently located I have noticed an omission in regards to my perceptions or feelings. No set diagnosis has yet been made, though I suspect PTSD or Anxiety Disorder will be the tag. There are a number of descriptions of common feelings and thoughts of new carers such as Sadness, Guilt, Relief & so on but I noticed that there is not a heading covering Anger & Resentment. I wish to be honest and these emotions are present among others and it does worry me.

I know I'll have to deal with these emotions along with others to be properly supportive and am seeking some indication that this is in the realms of commonality or at least possibility. I am checking other sites for information and advice and any pointers on where to look will be greatly appreciated.