If you don't get your next period, take a pregnancy test
it's definitely possible, wait a week after you're missed period, then take a pregnancy test
Your question doesn't really make complete sense, but if you are asking what causes sore nipples, other than pregnancy, then I have one answer. Sometimes, a week or two before my menstrual cycle, my nipples are very sore to the touch. If your cycle is not coming, it could be the result from stress. I remember being stressed so bad, my period was delayed a week and three days. So it's perfectly normal for your nipples to be sore, especially if it's close to your monthly.
Depends on timing. If your period finished a day ago, you have a whole month to find out, but if it's been three weeks since you had your period, you'll notice the absence before the symptoms. 
Three days Before my missed period I was experiencing nausea, tired, and had sore breasts!
Yes. You can have a girl... Three days before your period... AKA: What?!
Hi mom here, Yes this can be a symptom of pregnancy. I have had 4 pregnancies and three of those i had symptoms of pregnancy about a week before period started. It is possible to start having symptoms from when the fertilised egg implants in the womb. This usually happens betweek 8-14 days past ovulation. You may just feel pregnant, tingley or sore nipples, tiredness, and mild cramps as if your period was about to start. Hope this helps and best of luck
The First Response pregnancy test claims to be extremely reliable. They claim pregnancy can be detected up to three days before a missed period. Check out reviews written by users on Amazon.
She should take a pregnancy test. All three of those are symptoms of pregnancy.
Some pregnancy tests claim they can detect pregnancy one, three, or even five days before a missed period (which you wouldn't know you missed yet...) Pregnancy occurs during ovulation. Now ovulation generally occurs 2 weeks after day 1 of the period. Pregnancy test can be taken at any time regardless of the timing of the cycle. It is important to remember that pregnancy tests may be falsely negative early on during pregnancy as the levels of beta hCG are too low to be detected.
Maybe your home pregnancy test is not accurate. It is thought that about 40% of pregnancies are 'lost' with the first period. Until the last few years there was no way of knowing you were pregnant before missing a period so this did not happen.
You cannot get pregnant on the day before your period starts. Your period is actually the unfertilized ovule and the uterus lining falling out of your body, which means you are not pregnant. Ovulation (fertile time) usually happens 14 days before your period, and lasts two or three days. You can get a positive result on a pregnancy test a week after fecundation, but the more time passes the more accurate the result will be.