Toddler could have just choked to death all for the sake of a damn video game😤 am I in the wrong?

I’m pissed. Am I in the wrong ? I cooked dinner tonight and sometimes when I use the stove the house gets really hot. Where we live it’s been upwards of 100° outside lately so tonight the house got pretty hot and I’m currently very very pregnant so heat makes me feel sick. I didn’t even eat dinner because i was feeling so sick from cooking I just fixed my bf a plate and fed our toddler. After dinner I decided to lay down in the bedroom with the fan on because I wasn’t feeling well. I did not mean to doze off but my bf was still awake so our toddler should have been fine right ? Considering he’s with the other parent in the house.🙃 I was maybe asleep half an hour not really sure but I wake up out of dead sleep to the sound of our 2 year old coughing/choking and within 1.5 seconds of me hearing that I was awake, out of bed, and in there smacking our toddler on the back trying to figure out what he was choking on. My bf is sitting at his desk playing video games with his back turned to our toddler and a gaming headset on so he can’t even hear!? I asked what the hell was he choking on did he get something in his mouth what did he have etc. and my bf really had the nerve to say “idk I thought you were supposed to be watching him it’s your fault” what???? Like he really blamed me and I was laying down in the bedroom because I felt sick he knew that and he was the one in the other room WITH HIM? He got up and was trying to help with our toddler but even then had the nerve to huff and puff because he was “losing on the game” 😤 thankfully our son was okay idk what he choked on or if he swallowed it or what, then I see a pile of change in the floor from across the room like quarters pennies dimes and I asked why was there change all over the floor my bf said he was “playing with it” and that he was “fine because he was watching him with it”. First of all I’m not sure who the hell allows a TWO year old to play with a hand full of change, and second of all how are you “watching him” when your face is planted in a computer screen with your back is turned and you have a head set on? He couldn’t even hear him. Watching him my ass. Not only did he choke on something I’m assuming maybe a coin but our toddler also had a full diaper on and had poop coming out both sides of his diaper down his legs and was just sitting in it. It’s one thing for you to not see or hear but I know he had to have smelled his diaper like come on. Just ridiculous. Am I wrong for laying down and leaving him in there with his dad? Idk what the hell my bf was thinking normally I’m able to lay down and nap without worrying and he will watch him but tonight just blew me it’s safe to say I don’t trust him anymore.