I am 36 weeks and 1 day pregnant with my 3 kid. With my oldest 2 I had back labor and it was very easy. With is pregnancy my OB told me 2 weeks a go that my unborn sons head is down and he probably would not stay in for another 2 weeks l noticed about 20 mins ago go that I'm having stabbing pains in my lower tummy and my vagina? Is this normal or should I go get checked?