Possible OD?

I took 5 acetaminophen PMs last night with the intention of going to sleep. They're 500mg. I just took 4 (also with the intention of going to sleep). That means I took 4500mg total, which is over the "safe" limit. I got kinda nervous and freaked out and tried to induce vomit. I threw up twice to see if I could throw up the pills. I did this 10-15 mins after taking the pills. I don't want to overdose or land in the hospital. I didn't see any pills in the vomit, does that mean they could've dissolved already? I'm really nervous right now . It'd be great if someone helped. Thanks.