Do You believe in INTUITION ?? that GUT FEELING i dont know but let me explain Ive always had this feeling?

my wife was cheating but never had any evidence to p[rove it!!WELL its really hitting the spot this time i can feel it in my stomach SO BAD I MEAN BAD!! i asked her if She cheated but she said NO of course so one day i explained to her that i wouldnt leave her that all i want is the TRUTH and she looked like she was going too CRY but she said no she HADNT man i felt like she wanted to tell me something. NO matter what i do i cant shake the feeling, SHE ALSO BEEN acting like weird when were in the bed by grabbing my ears alot i hate IT jsut because shes never do IT before she told me she wanted too try somthing new. MAN ITS KILLING ME!! i dont wanna leave her if it not TRUE its just GUT FEELING PLEASE I NEED SOME BIG HELP WORLD!! i mean i have no evidence at all. and some reason i feel she stopped the affair just because of her Actions being extra nice treating me like IM THE ONE NOW like she knows what shes wants patting me on the back and looking me in the eyes like she just wants too move on!! THE BAD THING IS SHES 6MONTHS Pregnant!! ANY EXPEREINCED CHEATER OR SOMEONES WHOS BEEN CHEATED ON HELP??? i feel like something or someone trying to tell me something!