I'm sorry you're going through this, and I know it's scary.
So does this always show up in smear tests as never had anything like this before?
I am trying to work out
1. If it could have been from say 5 years ago, or is it this year etc
It could have been from 5 years ago, but 90% of people clear the virus from their bodies within 2 years, so statistically, it's from more recently than that. You may never know though. HPV's incubation period can be a few weeks to several months, so it's often very hard to pinpoint where you got it.
2. Will it go away?
Yes. Depending on the results of your pap smear, they may want to check you again in 3 or 6 months, or do some further testing now. That depends entirely on if you show any abnormal cells on your cervix, or if you just tested positive for HPV. You can have HPV without any cell changes. Most people will clear the virus from their bodies within 2 years.
3. Will it stay out of my system then?
Yes, but you can be exposed to other strains of HPV - there are dozens that affect the genital areas.
4. Do I tell others?
You should tell your current sexual partners, and use condoms.
5. Is there any vitamins or things I can do to make it go away?
Honestly, getting enough sleep, exercising, eating well, etc., are the best ways to keep your body functioning well. Some say that vitamin C will help your immune system. If you take that, take it at regular doses - no need to take heroic doses and make yourself sick from it.
6. Will this get worse what will happen, warts?
Does it tell you what strain you have? Some strains cause visible warts. Some cause abnormal cells on your cervix. Most likely, if you tested positive during a pap smear, you have a strain that causes the abnormal cells on your cervix. This could lead to cervical cancer, but as long as you are staying current with your pap smears and following whatever testing and procedures your doctor wants to do, you probably won't get cancer.
I know it's scary to hear you have an STD. Please know that 90% of us will get HPV at least once in our lifetimes. Most experts feel it's an inevitability if we are sexually active with more than one person, or sexually active with someone who's been active with more than one person.