First, I want to say good for you for going in and getting checked out.
Second - I had gallbladder problems during my pregnancy. I also had HELLP. Both felt AMAZINGLY similar. :( My gallbladder was found to be chronically inflammed, and was removed a year after my twins were born. (Incidentally, I'm now have some issues with my bile ducts...and the pain is the same - if anything it is even closer to the liver pain of HELLP than the gallbladder was - if I were pregnant right now I'd be freaking out!)
Soooooo...I am no doctor, and this is just my personal opinion, but it very well could be gallbladder related. Pregnancy is often the thing that pushes a gallbladder over the edge.
That said - it could very well also be pre-e or HELLP developing. With both, women sometimes get sick very fast - within a matter of hours - and from my own observations (remember, I am not a doc, this is just my personal opinion) I've seen people have right side pain and other bad symptoms before their lab work really goes bad.
Either way, two things...if it were me, I would follow up with my doc 1st thing in the morning and continue until I got some answers -sooner if you continue to feel bad. THere are three reasons why: 1) Gallbladders do often flare up during pregnancy, and they are usually things that can be put off until you've had your baby - but not always, so it is important to stay on top of it. Gallstones can sometimes be dangerous. 2) Pre-e and HELLP can come on very quickly and IMO it is important to be vigilant if you are having symptoms 3) IT is possible to have gallbladder issues and HELLP at the same time - I did, and am very glad that I didn't just assume that the pain was just gallbladder/indigestion/whatever and harmless.
Ugh...I know that is probably more than you needed to hear. :
I hope it helps some - and I hope you are feeling better very soon. Please keep us posted.