36 weeks, blood after IE

36 weeks and 3 days pregnant, first baby po. Weekly check up na po ako, then kahapon, first IE. 2 cm na daw sabi ng OB, pinakita niya yung fingers nya, may konting blood, normal lang daw yun kasi bumubuka na. Pinag start na din ako ng evening primerose oil. So, this morning bago maligo, may buong blood na lumabas, tapos madaming mucus. Then now meron pa din. Wala naman continuous bleeding. No pain din, madalas lang na paninigas ng tummy. Dapat ba magpanic or normal lang talaga toh after IE? And ilang days usually tumatagal yung ganito? Please share your experience and thoughts. Thank you!