Talk to Rheumatologist on M Having Nerve Pain In My Left Leg While I Fold My Leg I Couldnt Open It Atonce

i had limbo sacral sciatica few years back , i used to had medicine as nerve relaxants , brain relaxants , pain killers at the same time . but with the time u got rid of them n got well ... but since 3+ week m having pain in my left leg in start it was only when i fold my leg n open it i couldnt manage to stand properly or walk for 5 sec ... but with the time now i cant fold my leg plus i m having some sort of nerve pain while stretching my leg rather m sitting walking sleeping . its getting more pain ful day by day ... is it sciatica ? should i need to take medicines again? kindly guide