I CAUGHT MY FIANCÉ !!! i need advice ladies!

Okay ladies, this is going to be a long one so sit tight 🙄. 
My fiancé and moved in to our apartment exactly one year ago. Prior to us moving in he always mentioned that we were going to have a camera in the apartment. I repeatedly said NO, i do not feel comfortable with that and i need my privacy. I demanded privacy. When we moved in i was about 3 months pregnant. Well months passed & i am about 6months now, my mom comes to visit us & he comes home from work w, a mini camera. My mom & i looked at each other in disbelief, i told him again, i DO NOT KNOW why that camera is here, i said no to that. Why are you not respecting that. I completely forgot what he siad but he kind of brushed me off. For a couple days i saw the camera laying around the house. about 2 weeks pass, i dont see the camera anymore.I So furiously ask him about it. He said he took it back to work (he does construction and always takes things from work) i was so angry!! I KNEW & felt it in my heart that he was lying.He swore & yelled and made it sound so believevable, we had a huge argument, i was even planning on leaving him that day.WELL, months passed. My son is now 6 months old. && today i found out that i have a skype interview for my possibly new job. WELL this guy is so DUMB(my fiancé) sometimes 🙄. When i told him about the Skype interview it kind of slipped out his mouth, "Ohh I have a camera you can use" & then jokes "the one I've been watching you from" i was in complete shock but tried my hardest to play it off bcus i wanted to see if he really had it & i wanted him to show me it. So i laughed it off & acted like i was excited about it. (MIND YA, i have a Lenovo all in one pc, which has a BUILT IN CAMERA! & it was right in his face!!) well to make it shorter this guy did an entire run around to get the camera, which was in his closet in the living room. I saw him reach kind of like towards the cealing in of the closet & looking & acting really suspicious. He finally got the camera a usb camera NOT the one i saw months ago. Which leads me to think that he gave me the usb one to throw me off, & the other one is somewhere in that closet. GIRLS! He went out to throw out the trash & I quickly got on a chair and tried to check the cealing & i SWEAR i think i saw a small wire but i was so nervous of getting caught that i got down immediately! 
Now, before we went to bed he was acting REALLY funny, supposedly looking for something in the closet, & i could of sworn that he hid something in the kitchen. Of course tmm while he is at work i will do my FBI search. 
Ladiesssss!! I will be so mad if i find that camera or a trace. Like i feel like my privacy has been violated, like he doesn't trust me, like he is a lowkey creep & a compulsive liar. 
I do not know how should i go about it! Knowin me before i had my son I would of probably walked away( i always seek walking away as my first option) but now that i have my son i feel bad putting him(my son) through all that. Should i take this so seriously? Should i walk away and make him work for my trust. I am still so i shock and kind of hurt about this that i do not know how to go about it. It gets me more mad that i know if i bring it up with no proof he is going to lie so good about it. He wakes up at 530 to go to work & I swear i will break night to be awake when he wakes up and give him no chance to do or remove anything. 
What should i do ladies? What will you do in my place ? 😩😩😩 oh & while we were in bed (before he started acting like he was sleeping , because i know his ass is not sleeping, i know he is trying to feel if i get up or something) trust me i know when he is in a deep sleep LOL. I asked him, do you have anything to tell me. His response was "why baby?" "That i love you"😡