Travel

Help!

My boyfriend and I planned a road trip a few months back (everything is paid for, and already took our vacation days) this is only a 6 hour drive but as all of you know, 6 hours too long while experiencing the pain. I'm expecting to start THE DAY WE LEAVE. Unsure if it'll actually pan out that way. So I'm trying to prepare myself as pain killers, weed, heating pad will not be accessible while driving.

Any tips?

Has anyone tried the ThermaCare portable 'heating pads' and if so, would you recommend?

Thanks in advance