I'd agree w/ the no diagnosis. Even therapists don't do this w/ their spouses (at least good ones), as their too enmenshed & there is to much therapist caused pathology (we call it iatrogenic illness). Now if your IC says this, then fine (although she/he is only hearing one side, so there is a grain of salt factor).
On your emotional state. Honor those feelings. Lean in gently and let them wear themselves out on you.
What's your social life like? Do you have close friends to do things with? Do you have any more casual friends that you occasionally do things? Time to make use of that to get you out with people other than family right now IMHO.
Me: 50 W:43 S6, S3 M: 12 yrs. T: 17 M is bad & Not happy Bomb Mar '14 S 5 Feb '15 D Bomb 13 Apr '15 (but "no hurry") DB Coach May '15 Wants proceed on D Aug '15 Starting 1-on-1 negotiations Sept '15