yes you can
You can't use the ointment but you can use the cream. The ointment is too thick and suffocates the piercing. You really don't need it though. Unless you scratch it with jewelery or something. Natural sea salt and water is fine for cleaning.
You really don't have too. If its infected and your doctor tells you to use an antibacerial cream, then you should. But otherwise, it'll heal just fine without it. Also, if you do have to use it in the case of infection, use the cream, not the ointment. The ointment is super thick so it essentially suffocates the piercing and it collects dirt/dust. The cream rubs in so its suitable for a piercing :) **The best thing to do for your piercing is a good saline soak (AKA, salt water). If your piercing is giving you difficulty, then you should soak it for 5-10 minutes in a hot salt water solution. Even better than salt water though is emu oil. It's basically the miracle "ointment" for body piercings. Though neosporin does have a history of being used on body piercings, I advise against it. It can cause even more irritation in your piercing.
Yes, as long as the gauge is correct for the tongue piercing - for example : nipple bar is 14 gauge - usual tongue piercing jewellery is 14 gauge and the length of the nipple bar is the correct length for the wearers tongue (this varies from person to person). Basically - if it fits - wear it!
To measure a nipple bar, you would typically use a caliper or ruler to determine the length of the barbell shaft between the two ends that secure the piercing in place. Make sure to measure in millimeters for accuracy and note the gauge size of the barbell as well.
Use a nitrofural or furazolidone based ointment.
you should use a stud
what is desonide ointment use for
Alcohol should not be used on any piercing. Soaking your piercing in sea salt is best. you can also use non scented antibacterial soap to clean your piercing
Continue to clean it with the natural sea salt and if its still not healthy in a week, maybe use antibiotic cream on it. Neosporin is a good example. Just be sure to get the cream and not the ointment. The ointment is like vaseline and much too thick for piercings. When you use any creams, rub them in completely. Don't cake them up around the piercing because it'll stop the piercing from draining properly.
It shouldn't really have to use it unless its to help clear up infection or after you swim or something. If you do use it, get the cream and not the ointment. Make sure to rub it in well too. If you put it on too thickly, the piercing wont be able to drain/breathe properly.
The white fluid is just your body healing, and nothing to be concerned about. You do want to clean it often so it does not get infected. Your biggest concern is when the liquid is green or yellow. At that point, consult a piercer for suggestions, most of the time, they will tell you to either use triple anti-bacterial ointment, or have you remove the jewelry and see a doctor about antibiotics.