Way too early for any pregnancy symptoms as Sonia pointed out, and it'd be a rather odd one in my opinion. I would recommend NOT doing what Ahlamw3x said to do unless you're dabbing it on the outside and nowhere else; salt can cause certain bacteria (many, really) to die and others (like staphylococcus aureus, which is a salt lover and can get in through cuts and abrasions and cause a serious staph infection) to take over in the absence of the good bacteria you'll have killed. Don't ever put anything into your vagina unless a doctor says to.
If you used a condom, your risks of contracting STDs are lowered. I wouldn't think the itching at the opening is a pregnancy symptom. Its too early for one.
hi. i think it might be an infection or it might not be. try this. it always works for me. for the next few days whenever you go bathroom dont use tissue. take a bottle and fill it with hot water from the tap(as hot as you can manage without hurting yourself(add abit of salt to help with cut(optional) and then wash yourself with that. not just the top. try and get in as much nooks and crannys as possible(cut your nails first)wash of all the slippery stuff you will notice. do this a couple of times a day and you will notice a difference. tell mi if it helps u