1. on March 2016 after the Bikini Waxing then my ex boyf gave me an oral 2 days after my waxing. My ex was confirmed thrush issues and Scabies on his face sadly. I got transmitted by both in my inner thighs/bum/vagina/public hair areas. Extreme itches next days. Docy for 12 days was prescribed. All STDs tests came back negatives. 

Welcome to the Forum and thanks for the detailed description of your problems.  I'll be glad to comment.  From the sound of things your weak urine stream may have been related to the catheter inserts for your surgery.  There are no data to suggest that scabies is an important pathogen of the urinary tract, that it goes into the bladder, or that if effects the urine stream.  The same is true for the fungal infections which cause thrush.  Fungus infections with the same fungus that causes thrush can infect the skin and cause a rash which resembles scabies but this is rather unusual and most clinicians can easily distinguish scabies from a fungal skin infection.  If these are continuing problems for you, my advice would be to discuss your urine problems with a urologists.  There are certain pelvic exercises which are well known to urologists and some gynecologists to help with problems of urinary incontinence and weak urine streams.  If the skin rash problem recurs I would suggest asking for the opinion of a dermatologist.

I hope these suggestions are helpful.  EWH

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Ok. So Fungus also doesn’t cause weak urine stream am I correct. 2. How long it takes to heal strong type (drug resist) of Fungus? 3. I have applied scabies lotion and all itches/pain are gone after twice application of a-scabs lotion. (5% Permethrin). I also has jock itch the next day after his oral sex- but the jock itch gone after 2 years. Is it my immune clears it’s itself? 

Correct. a fungal infection would not cause a weak urine stream. 

If your fungal infection did not respond to the usual sorts of treatment that might be available, best to seek the advice of a local physician. Once again, this might be your gynecologist or a urologist. 

fFnally, yes, each persons normal immune function often help to fight off infections.  EWH

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Quick academic question- Can scabies goes to Vulvar and Clitoris and vagina area and caused redden/pain and itching? Can immune usually get this subside with time so when applying 5% lotion it will faded fast? What is the normal application of lotion ? Can I use until I feel no more itching? 

Scabies is most typically an infection of the exterior skin, not mucosal surfaces such as the vagina, inside of the vulva or clitoris. I would look for other causes of symptoms at these sites.  There are no scientific data as to whether or not the normal immune function can illuminate these infections but I suspectThat it would happen. After treatment with lotions (the preferred lotions contain permethrin and should be applied to the skin of the entire body from the neck down, left on for at least 10 hours, then washed off) the itching of scabies usually goes away slowly over a week or more, not rapidly.  Retreatment because of continuing itching is not typically needed.---