If you have regular 28-30 day cycles and have never missed a period, you can wait for your next period and if you miss it, please get a pregnancy
test with a fresh early morning sample of urine 3-7 days later. If you wish for a better and an earlier confirmation, you can get the serum beta-hCG
levels measured about one week prior to your next cycle. You may also get a trans-vaginal sonogram, about a week after a missed period to clarify the issue. Hope you find this information useful. Wish you good luck.