how to survive progesterone injections

Srishti

I have been taking pio injections for the last 23 days (started 4 days before transfer). I got my beta hcg done on 12th June and it was positive. I want to really substitute to vaginal gel / oral progesterone. But I have been asked by the RE to take the injection till 29th July. I am not sure if I can do this, my hips are already black and blue in patches and pain all the time. please help!