Thanks for using Healthcaremagic,
After going through your history, you have undergone total Hysterectomy last year and now facing problem of painful intercourse in medical terms this is Dyspareunia, there are many possible causes one of them is dryness or xerosis but lubricants and Premarin cream is not helping you, other differential are
1) Infections (Candidiasis, Chlamydia, Trichomoniasis
, urinary tract
infections, pelvic inflammatory disease
2) Vulvar vestibulitis
3) Interstitial Cystitis
4) Introitus has become too small (by scarring)?
5) Last but most important could be vaginismus
You should consult Gynecologist to rule out all possible causes and if everything is fine then consult a Sexologist/Psychiatrist
to help you in this regard I am sure your problem can be improved certainly to have good life.
Hope this helps.
Dr.Akhilesh Dubey M.D.