DH was in the military and I have sworn many times that the military health care system-at the bases that we had been stationed at (I'm sure there must be some good military doctors somewhere, we never encountered them, but we only had 2 bases)- would have let me die/killed me if he had still been in the military for my first pregnancy. There is no doubt in my mind. I am 100% certain that they wouldn't have taken me seriously until I was pretty much dead. (They missed DH's torn knee ligament for over three years even though he was having appointments at least monthly, and his problem was fairly obvious.) That doesn't help you much, but you have my sympathy for having to deal with that.
They really need to run liver enzymes tests and check your platelets. I'm normally not an advocate of making up symptoms/lying to doctors, but in the situation you are in, and knowing how crappy some of the military doctors that I have seen were, I would probably lie and say I was having dizzy spells/seeing spots/etc. etc etc. (look at the symptom list and list them off) until they take you seriously and do some tests because what you are experiencing sounds very serious to me. They should rule out your gall bladder and given how early it is, there needs to be a level III NICU nearby in case it is HELLP and you have to deliver.
Good luck and keep us updated.
Given your PIH, have they sent you to a high risk ob/MFM/peri at all? If not, I would be a pain until they send you to one who might take you more seriously.