Confused...I don't want to overreact TMI

Maredith
My husband and I had a big fight last night  (about him lying to my face and I had the proof so it still took 40 min for him to admit he lied and he said he didn't know why) so I slept else where but I was back in by 7 am. Now I had to go to the bathroom and when I went in to the bathroom there was blood on the toilet seat (like when you have your period blood) 
 nd I asked him about it and he's not bleeding anywhere and said he thought it was me (I'm 4 1/2 months pregnant and hadn't used the bathroom all evening or night obviously) so I asked him where it came from and he said he didn't know and I just feel like he's not being truthful....thoughts?