Hi Maganm welcome to H.C.M.F . you are having low back pain
some times radiating to the stomach on right side. it strongly suggest urinary tract infection
. with ascending infection to uterus
, causing bleeding. pregnancy
means stopping of periods as the foetus grows till dlevry of the baby. consult a gynacologist for diagnosis and treatment. pain could be due to stone in the urinary tract. thanknyou.