Cymbalta

Hope you find something works for you mimm. Spasticity and muscle tightness is exhausting and really hard to deal with and little sleep makes it all so much worse. . Peter can walk but he is weak especially on his left side. The tightness that develops after exercise doesn't go away as it should after a few days. So he can only do a little at a time - can't push himself too much as it's counter productive. If there was a way of getting rid of the muscle tightness and spasticity he would be able to do so much more. It has improved over the last 5 plus years but symptoms ramp up once in a while - sometimes for a discernable reason (too much exercise, cold, bad positioning etc)  and sometimes we have no idea.............. 

Hello. Just to be clear - it is my husband who has the SCI but he isn't into forums etc. We have worked together every step so although I am happy to pass on what we have learned works for him - it is second hand/observed info .
Re baclofen - yes it is for spasticity (Amytriplyline and Diazapam help spasticity too) but for some people, Peter included, spasticity and increased muscle tone also trigger his nerve pain (and yes he occasionally feels like it is "everywhere" - read Tetra's earlier description of it sometimes feeling like it is affecting her teeth). So reducing spasticity helps alleviate nerve pain indirectly for him. Not sure whether this is so for everyone. 
Re the pain in your hips. Peter has recently had an increase in his muscle tone and pain levels mostly around his left hip, groin and knee. He has an appointment for an MRI scan to check no further cord deterioration (he has cervical cord thinning/myelomalacia from stenosis). He also has an appointment with an orthopedic specialist to check whether the increase in pain is due to hip, knee and/or lower spine arthritis (increased pain also increases his muscle tone). Physios think this is the more likely culprit. Have you had that checked out - your description of "cracking" could be arthritis? Cortisone injections etc can help. 
Also - re the stretching. I know it's hard to think about any increase in movement when everything is hurting but maybe your therapist can give you a series of gentle targeted stretches that will help. I know Peter gets enormous relief from gentle stretching. It can be done from sitting and lying down. Sometimes increased exercise can actually aggravate his muscle tone/spasticity. If you don't have a therapist there's lots of stretching advice on the internet. This leaflet designed for people with MS has some good ones www.nationalmssociety.org/NationalMSSociety/media/MSNationalFiles/Brochures/Brochure-Stretching-for-People-with-MS-An-Illustrated-Manual.pdf
Peter has some CBD oil but not started taking it yet. We are reading good anecdotal evidence that it helps and also some good "proper" research evidence. Kratom sounds interesting but as it is illegal here in the UK he won't be able to try that.
Hope you find the right combination of things to help you.