Blood after Sex, @ 35 Weeks

Hello po! Siguro a month na kaming di nagsesex ni husband. Pero normal naman po pregnancy ko at di maselan. Tapos nagsex po kami kanina, nafeel ko po na mas masikip tapos masakit yung sex namin. After po nun, may blood po. Ayan po nasa picture tsaka konti nahawakan ni husband. Wala namab po ako nafefeel na contractions or pain after namin mag do. Pano po ba malalaman kung yung blood is pag palabor na or spotting lang? Salamat po sa sasagot! :)