Personally, I think you'll be fine. Call poison control, just to be sure.
I was packing for my most recent WDW trip and was putting some unisom (over the counter sleep aid) in my bag, and I was taking vitamins at the same time, and I inadvertantly took 5 unisom!!! I thought I had a handful of vitamins and supplements in my hand, and I was kind of scrambled with the packing, rushing around and all...and so I panicked! I tried to make myself throw up but I couldn't. I then called poison control, and they kind of freaked me out by saying, "Is there anyone there that can drive you to the E.R.?" That's what they told me to do. At that moment, my DH walked in. I told him what happened, and we left to the ER. I was there for a few hours and it cost me several hundred dollars to be told, "No big deal, you'll be fine."
Just letting you know you are not the only one! Feel better soon!