I Think I Was Roofied And I Might Lose My Job Over This (cruise Ship Employee)

I work on a cruise ship, which have pretty strict alcohol intoxication rules. I went on an excursion yesterday and during the excursion drinks were poured. I knew this in advance, so I ate a heavy breakfast (potatoes, eggs, bacon) and had about 3 drinks on the boat and beach, but refused any refills the moment we stepped on the boat to return. Upon returning, I sat down on a bench with the deck hand from the excursion (also the one pouring drinks) and vaped some (no marijuana) and was checking my phone. I remember my phone saying it was 11:40 (I set the time to have it displayed some minutes later than the actual time, so this should be around 11:35). I have no memory of anything after that.

As per one of my coworkers he saw me on the same bench with the same guy at 12:20pm, was piss drunk and refused to return to the ship. After that my manager went out to look for me, and I was nowhere to be found. All I remember is waking up in the medical center around 6pm. I was told I fell on the pier and three people helped carry me onboard. I arrived at 1:08pm, past all onboard time.

Basically, I think I might have been roofied, because how could I have gotten to this stage with 3 rum punches? I only took ice refills past 11am, and at this time I still had half a drink left and I had left it sitting on the sun as I went to the bathroom and to swim (some guests said they spotted turtles by the safety barrier, so I swam 20m there and tried to see underwater despite not having my glasses, and no goggles). I was fine to swim, to walk, to board the boat, to talk to guests about the food onboard, and listen to their firefighting stories, and they played old 2000s party music on the boat back. Somehow I wasn't fine to come onboard.

I tried requesting a roofies' test but none are available onboard, and I would only be able to get one our next embarkation, which means it's far too late for the test to be conclusive. I also know STD panels need to be run after one week to be conclusive, so right now I have no resources to go forward. I was breathalyzed and tested for drugs - I was clear on drugs, but no check for benzos/roofies, and my BAC was at 0.139 at 6:20pm - which considering I am a 150lbs female who had 3 rum punches before 'lights out', makes no sense. Essentially, all this means I am now at risk of losing my job, too. I might be dismissed over this and I have no idea how I can possibly prove my innocence or if I'm innocent at all.

I have been drunk before, I am a heavy drinker when I decide to get the party on with friends, I have taken on 7 shots of tequila and gone back to work as if nothing. I have only once blacked out from drinking in 2021, but I had recollection of bits and pieces, not outright 'lights out' like I experienced yesterday. I don't know what happened to me for this to have taken place and as much as keeping my job concerns me, the fact there's 5-6h of my life that are gone is the thing that scares me most about this whole incident.

I posted a similar version to this to r/Advice and someone suggested I look for legal resources. I am a seafarer and my ship is registered in the Bahamas. Incident took place in St. Thomas, USVI.