If both partners don't have stis is it possible to still get an STI because of unprotected sex?

No. The problem is that you are seldom certain that your sexual partner does not have a sexually transmitted disease. If they do not, then you cannot get one from another source. When my students ask if you can get these from a toilet seat i tell them only if you are having sex on the toilet.
No. All stds are transmitted person to person. So if one has an std, they got it from another person, whether it's your partner or not.

Related Questions

Just had unprotected sex 6 days ago and again today different partners. When should I get a STD check?

Whenever new partner. Whenever you have a new partner, you should both be screened for STDs. That will only tell you your current status, but is a good place to start. Use condoms EVERY TIME you have sex to help protect yourself and your partner. Be sure to use an effective birth control method as well if you don't wish to get pregnant at this time. Read more...
A few days plus 6 wk. Thanks for the question. Urine or vaginal swab testing for gonorrhea and chlamydia are valid anytime 2-3 days after the last exposure. Blood tests (HIV, syphilis) should wait until 6 weeks. There are no good data on best time for vaginal infections like trichomonas and bacterial vaginosis; 1 week maybe OK but 2 weeks might be better. Given this sexual lifestyle, consider condoms. Why take chances? Read more...

If you have unprotected sex, and have no symptoms of any std's should you still get checked? Is it possible to have an STD without symptoms?

STDs. Yes. Of course. Many stds do not show immediate symptoms. At your age i would challenge you to learn about the twelve common stds and how to prevent or protect yourself against them. Sexually active men and women need routine stds checks unless they are in a monogamous trusting relationship. Read more...

Can I get std from having unprotected sex even if my partner and I are both virgins? Also I keep getting jock itches. Is there a prevention for it?

Tinea? Yeast? Other? It is not possible to have an STD unless one person or the other has had sex with someone else. "Jock itch" is not a term normally used in women, only men. Have you been diagnosed with tinea (same fungus group as jock itch in men)? Yeast (entirelydifferent)? Neither yeast nor tinea is sexually transmitted. Don't assume any diagnosis based only on symptoms; get professional care. Read more...

Say if u had unprotected sex with someone who does not have any infected area/sore can u still get std?

Yes. The presence of a STD is not defined by a visible sore, although that can help. Many can exist in a carrier state in those infected and be spread to unsuspecting contacts. Chlamydia, HPV ,syphilis and sometimes gonorrhea can all be passed by asymptomatic carriers. Condom use can decrease risk, but is not fully protective. Read more...

Everytime I have unprotected sex with my partner I get a burning itch afterwards which lasts days. I've had STD checks and not allergic to condoms etc?

Allergic reaction. Sometimes the irritation from intercourse can cause itching/burning. Are you adequately lubricated? If not, consider using water based lubricants as a possible way to reduce inflammation best wishes Dr M. Read more...