Me and my partner had unprotected sex but i didn't finish inside of her is there still some way she can get pregnant from precum if my penis entered her vagina? also her period is next week should we wait to take pregnancy test or now?

Yes, there is a chance she will get pregnant. Precum contains semen. You can take the pregnancy test a wee to ten days after a missed. Period. Until then they won't be accurate. Use contraceptives to avoid pregnancy and STDs.

There is risk of pregnancy. She may wish to take Plan B, if this happened less than 72 hours ago. Pregnancy test may be done if she misses her period by 4-5 days.