Is it possible to get pregnant through fingering 5 days after your period with semen (exposed to air) my last period was on the 1/8/14 (31 day cycle)?

It's possible: Any exposure to semen in the vagina regardless of the method of deposit places you at risk for pregnancy. Also, remember that sperm can survive for 3 days inside the vagina. Therefore, the sperm that is deposited in the vagina may result in pregnancy 3 days later.

Unlikely ...: Since ovulation (female fertile time) always occurs around 2 weeks before period, the described scenario poses an almost zero odd to conceive by counting your 31-day cycle. Nonetheless, always do HPT soon after missing the regularly expected period and repeat it in 1-2 wks if (-) or still in doubt. More? Seek timely professional attention and counseling.