Pain on my side and lower Back and just about to start IVF

Hi. I was wondering if anyone can help or advise me . I am due to start my third round of IVF on Monday ( the other 2 failed) and I am currently experiencing a lot of pain in my right side and on my lower back, a stabbing like pain , which comes and goes and I need to take painkillers to relieve it. My 3rd round of ivf was already delayed 6 months as I went under a lot of tests as I had the helicobactor bug in my stomach . All that has cleared up and the consultant said I probably get a pain on my lower abdomen from a slow colon which he also thinks I have. He did a Colonscopy and an endoscopy on me . Anyway the pain is in my lower back and the pain on my side is severe the last few days , and I am under duress as I want to start ivf Monday. The GP practice I go to have absolutely no interest whatsoever in helping me. I am out of my mind with worry as I am now 43 and every month that is passing is like a year to me . Maybe the pain will pass over the next few days and it's still 5 days until I start injections. I don't think there is any point in ringing the IVF clinic as they don't really want to know other problems either! Just wondering if anyone could give me some advice as I am feeling very alone x