Hi and welcome to HCM. This sounds like typical lumbosichialgia with nerve compression. You should do lumbal xrays or MRI to see is there disc bulge or any other spine disorder. ALso some neurologic disease may be considered but I am sure this is benign and you ll have to rest and take painkilers or corticosteroids till symtpoms improves. Sometimes is surgery neccessary too. WIsh you good health.