May have taken too much, help asap?

Update: Went to the ER, and doc says I should be fine. No pain or blood, but will do my best to update over the next couple days.

I was using my JBL Enema bag and the capacity of it is very high. I think I took in a bit over 4 litres, maybe 4.5 and relaxed on the bed to admire the work. However, a few minutes later, it was if the pain stopped and my belly felt very soft all over. I've never experienced something like this before, and I'm concerned I did some serious damage even though it didn't hurt. I think I'm back to my normal weight, but my belly looks more rounded at the top instead of the bottom. Is this common? Do I need to call someone?

Adding to this, may be graphic: I felt some nausea going and I ended up throwing up quite a bit, and I realized that my stomach was filled with the stuff in my large intestine! Anything I should be concerned about? I did a couple clear out ones before but not to this extent.

Maybe a trip to the ER, any blood?

Maybe a trip to the ER, any blood?

No blood, no pain, but ended up going into the ER anyways. I threw up what I'm sure was fecal matter, but I did do a couple small cleanouts beforehand so it wasn't completely contaminated. No blood, no pain, but it's exactly what was described here, the water flowed through my entire digestive system. Doctor says there's not really anything to worry about, it shouldn't cause sepsis or anything like that and just to keep an eye on my nausea levels and come back if it doesn't improve. I don't feel as bad today, still a bit nauseated when I eat but hardly any pain or anything. I'll keep posted on this thread each day to keep people in the loop.

Apologies for the late reply, the whole event was triggering some serious anxiety so I had to back off. I'm pretty sure I'm back to normal now, but still nervous about any potential long term damage. Hope that's just being paranoid is all, as I don't think there's anything wrong with my bowels.