I cant pee

Ti

so I have to do a drug test for my new job. I peed about 7 am. my appointment was at 8. I coudlnt give enough to satisfy the testing needs. now Im on my 2nd cup of water. I feel like I have to pee again just like I did the first time. If I dont meet the needed amount for the test it is an automatic fail. so here I sit boucing my body trying to make enough pee to pass the requirement.