Help me understand more

Hi All, I know i can google this question. But i still wana ask here.. haha! Whats the difference between real contraction n Brixton Hick Contraction? My tummy is always harden every 10mins. at the same time my back pain too within tht 10mins... But! Nt every tht 10mins my back is in pain. Also, after 10mins for afew times, suddenly no more pain. Till 30mins later.. So is this real contractions or hicks contractions?