Medical Marijuana and pregnancy

Here's the thing, I literally can't move because of severe PGP, I have a toddler to chase around, and my husband is out of town for a week for work. I haven't touched any of my lotions or oils (only thing I use) at all since we tried to convince, I'm now 27 weeks along. I really, really could use a little bit of my lotion on my lower back/pelvis area but don't know if it's exactly unsafe. It's not strong at all. Tylenol doesn't do a single thing, it doesn't even take the edge off anymore. I'm desperate and tried everything to help with this pain except my lotion and oils. Just thought I'd ask before trying because I really don't want to do anything to harm my baby's development. So if anyone knows, I'd love the help. Thanks in advance:)