Look into the symptoms for interstitial cystitis. Also, the facia holding everything together inside may be tight and unmoving. A PT who is competent in myofacial release may be able to help.
I see patients with pain at the tip of the urethra from time to time. If there is no swelling or redness at the area, I have sometimes been able to treat it with a 2 week course of doxycycline. Regarding the deeper, pulling sensation, this sounds like a muscle problem. I agree, a pelvic floor physical therapist should be able to help with this.
Dr. hoyte