Talk to Gynecologist on Gynecology

I am 29, married from four years, have one kid aged 2 years and 7 months. I have issue of pelvic pain and back ache since my son's birth. and it gets worse after intercourse, and towards the end of day, specially when I have used stairs, have been standing or walking for long hours. Periods are also not regular and comes with pain, was prescribed Yazz for three months, used it but instead started to have spotting between periods and had to take motilium alongwith it due to so much nausea, and when given famila injection had spotting for a month and had on and off spotting till three months. this month has particularly gone bad, had my periods on 4th-12th of june and then again had heavy bleeding from 17th-20th of june, with so much pain. I get tired easily, often have aching legs. This is causing much distress as its getting difficult to fulfil my duties due to constant pain. I often have to sleep on stomach because the pain just wont let me sleep on back or side. Pelvic ultrasound is