This is called hirsutism - - would see a general endocrinologist to figure out if it is due to excess testosterone or DHEA, or whether it may be PCOS.
As for hysterectomy and influence on hormones...I have no idea. Perhaps it's the influence on your facial hair. If not, I would think a look into Testosterone & Dhea-s (or perhaps Testosterone alone would suffice.) P.C.O.S. can cause hirsutism (and a number of women who suffer hypothyroidism, also have PCOS). As can adrenal problems.
I would ask your doctor to take a look into your hormones (Estrogen, Progesterone, Testosterone...), if only to put your mind at ease. If he/she is unwilling to...you CAN do this on your own: http://www.healthcheckusa.com/lab_tests/The_Roby_Institute/The_Roby_Institute_Female_Series_option_A