It is risky - but a specific test would have to be performed to find it and that test likely is not routinely run unless ordered or you are suspected of using it. Indiana is a very conservative state so I don't know what that likely hood of them randomly screening citizens for "drug abuse". It is up to you if you are willing to take the risk or not. Doesn't sound like you are, so I wouldn't. Its as simple as that. There really isn't any need for you to take her butter in my opinion. You haven't started your chemo yet and the drugs they typically give to manage nausea usually do a pretty good job, unless you end up like many here that may have had to go beyond the first or second line therapy and need something to take the edge off the cumulative side effects. My wife has been on chemo continuously since August 2013. It has for the most part been pretty easy for her. She goes in get her infusion, gets her pump and drives to work. Next day it's again of to work, the third day - off to the chemo center for her disconnect, then off to work. By Thursday she starts to wind down, and the fatigue hits her. She looses some appetite, but not much. She is just a little pickier about what she will eat for a couple of days. The discomfort from the HFS has been fleeting for her and while on the pump her fingers might start to tingle, then after a few days its gone. Some treatments are worse than others in that regard, but for the most part pretty good for her. Its become a rather boring routine once every three weeks now. If you look in my signature you will see she is stage IVb, it doesn't usually get too much worse than that as a starting diagnosis. She is on Chemo for as long as it will control her cancer.
Everyone is different in how these drugs affect them. Some worse than others. But its manageable. We don't know what stage you are or what treatment you are going to have. Usually its FOLFOX and sometimes (as in my wifes case) they will add Avastin. This is a cocktail of three drugs Oxaliplatin (oxi), Leucovorin, and 5-fluorouracil (5-FU) The Oxaliplatin is the nasty one. It causes some might interesting side effects. First Bite Pain, sensitivity to cold, tingling fingers. And along with the 5-FU is usually responsible for the nausea. You may not be able to get through all the courses of treatment with 100% of the oxi, as it may drop your blood counts too low, and you may have to delay a treatment or reduce the amount. This is not unusual.
The Oxaliplatin is always given as an infusion. 5-FU and Lecovorin as well. But sometimes they will substitute Xeloda for 5-FU, its what is called a Prodrug and may be taken orally, and in the liver its converted ti 5-FU. Some like this rater than having the pump for 48 hours, as its more convenient for some. My wife isn't good about taking pills on a schedule, as she is a busy engineer. Travels from construction site to construction site. For her the pump is easy and she more or less ignores it and goes about her business. As a former research chemist that did anti-cancer research - I like the pump better as it maintains a good constant blood level during that 48 hour period. You have to take the pills for a longer period of time, and depending on your diet the blood levels may vary a great deal from one day to the next. Also I understand that Xeloda for some folks leads to more HFS (Hand & Foot Syndrome), a painful condition of the hands and feet, making it hard to hold things and to walk.
So - right now - I would wait and see what you may be in for rather than panic or stress over medical marijuana. In all honesty - the pharma industry spent many hundreds of millions of dollars looking for a use for the compounds in marijuana, and didn't find anything all that better than drugs already available to treat nausea and pain.
Good Luck with your decision.
DW 53 dx Jun 2013
CT mets Liver Spleen lung. IVb CEA~110
Jul 2013 Sig Resct
8/13 FolFox,Avastin 12Tx mild sfx, Ongoing 5-FU Avastin every 3 wks.
CEA: good marker
7/7/14 CT Can't see the spleen Mets.
8/16/15 CEA Up, CT new abdominal mets. Iri, 5-FU, Avastin every 2 wks.
1/16 Iri, Erbitux and likely Avastin (Trial) CEA going >.
1/17 CEA up again dropped from Trial, Mets growth 4-6 mm in abdomen
5/2/17 Failed second trial, Hospitalized 15 days 5/11. Home Hospice 5/26, at peace 6/4/2017