Gosh just needing to moan so apologies in advance, My lower back just started hurting yesterday evening, for no apparent reason, was up half the night in agony and it’s still sooo painful, painkillers aren’t really touching it, god know if it’s linked to the neurological stuff or something else but it hurts to walk, lie down I fact anything. It’s a bit odd in that the pain is raidating to my lower abdomen feels like really bad period pain 
I have that too, had for a while. The pain is now reaching up my spine. Horrible isnt it. I havent been diagnosed ms but a one off something! Though the pain in back is much worse now and is ongoing for weeks. was given amitrypytaline which now on 30mg. Doesnt really stop the pain but i do sleep better. I find a hot water bottle can sometimes help. I have started swimming again and though i still have sore back when i swim, i feel that some exercise does help even if its just psychological. I am back at dr on monday but am beginning to wonder is even a slipped disc or something. I also have pain in legs and feet and have a buzzing ankle.
Well had a bath and really really hurt then but this morning I got up and it was hardly there at all, and didn’t bother me all day, until about 9 pm and it’s back