Welcome back to the forum.
Replying first to the question posed in the title, before I read anything else: No. Prostatitis does not suggest HIV.
Now I have read the rest. You describe a partner who is exceedingly unlikely to have HIV. You're a little young for prostatitis, which is more common in older men, but your symptoms are typical. However, most prostatitis is not due to any known infection, and contrary to what your doctor said, is not due to any STD. Although antibiotics like Bactrim often are tried, in most cases they make little difference in symptoms -- especially in younger men, who are especially unlikely to have bacterial prostatitis. You might ask your doctor about referral to a urologist, if he isn't one himself.
To your specific questions:
1) Answered above; this has nothing to do with HIV.
2) White tongue has many causes, from minor viral infections to changes in diet and nutrition. But I doubt prostatitis can cause it.
3) Most prostatitis carries no ongoing important health effects. It is not likely to affect your fertility. However, this is something for you to discuss with your doctor.
4) Many urologists believe that regular sexual release is likely to benefit prostatitis. I see no problem with masturbating, or (even better) continuing sex with your partner. You have nothing that will harm her.
I would recommend you read up about the chronic pelvic pain syndrome (CPPS) -- which sort of overlaps with non-infectious prostatitis. Google CPPS (spell it out) and start your reading with the excellent Wikipedia article, which will be near the top of the google hit list.
Best wishes-- HHH, MD
Antibiotic treatment is also a common cause of white coated tongue.
Thank you very much for the reply. I went to the urologist and he sent for a test on my urine for STDs, I am really scare because he mention Chlamedia and may be a cause for the prostatitis. I discontinued the Bactrim after a week due to alergy end was giving Cipro 500mg. Is Cipro effective for Chlamedia on a 14 Days twice a day dose?
Your urologist is mistaken, or you misunderstood. Chlamydia rarely if ever causes prostatitis. Cipro is commonly given for prostatitis, but is not ideal against chlamydia. Don't get your hopes up that ANY antibiotic will have any benefit; see my original reply.
The test for Chlamydia and Gonorrhea came back negative. I went to do a CT scan order by my doctor/Urologist. I continue to have sharp pain in my groing, lower back, penis and pelvic region and this white tongue with little red dots have me terrify. I don't know why I keep thinking I may be infected with HIV. I also continue to take the Cipro 500MG. for a few more days left. I want to thank you for the support.
I also "don't know why [you] keep thinking [you] may be infected with HIV." Based on all the information you have provided, there is no rational basis for it.
But thanks for the thanks. Take care.