Urine Drug Test

Can anyone give me advice, I am so freaked out right now. I'm honestly done smoking now. This has caused way too much stress.

I am a female 5'8 144 pounds. I had to do a pre-employment test on Tuesday (5 panel non-dot UA with MRO review) I had been clean for 25 days at that point. I don't know if I would have classified myself as a heavy smoker, about half a joint every few days. I have been exercising for months (10 miles on a stationary bike daily) I have taken 3 home drug tests - all negative with solid lines- (one was with the first morning urine) I am hoping it is not too diluted. I got the paperwork for the drug test later in the day, by that point I had drank a coffee, 2 mt dews, and a 20 oz of water. When I got the email for the test I was still at work (my current job) and drank 2 20z more of water. I had urinated quite a few times through all this. When I got home I drank a 16.9 oz of mt. dew and filled that with water and drank that (then did my 2nd home test - solid lines) Before the test I drank 2 more 20oz water (used the bathroom again) Now here is the joke... the testing facility was an hour away from home so I drank a lifewater on the way so I could go when I got there. I had to wait 45 min and by then I really had to go (like going to pee my pants) so I used the bathroom. Went outside and smoked a cigarette. Then came back in and thought well now I can't go I better drink some water. Well I drank 2 more 20oz of water and another hour and 15 min later had to go again, but instead went to the desk and said "I have to go NOW!!" so they got me back there. I could have filled the cup 10 times. I waited 2 1/2 hours total to pee in a cup. Insane!! The lab they are sending it to is MEDTOX. Since it was so late by then it wasn't going out until Wednesday morning. Now its Friday. I called the recruiter today just to "touch base" and she was still waiting on the test. (4:00 PM) Am I screwed, is it being held up because it's positive. God, I hope not. :( I have "The Stuff" but didn't drink it, now I wish I would have, years ago I did and passed it within a few days by using that. I figured I was clean. She said maybe Monday, I dont want to give my notice at my current job until I know FOR SURE.