Frozen embryo transfer in natural cycle.

I have opted for natural cycle embryo transfer in IVF, I have thyroid (TSH 2.08) & slight prolactin increase-29.6, vit D deficit, anemia. This is my 2nd transfer process ( first transfer March 21) & there is no detected fertility issues. My experience with both egg extraction(12 eggs- 9 embryos) & medicated frozen embryo transfer was bitter since I faced side effects, swelling, allergy, fluid retention, depression etc. Post my first transfer my cycles became irregular & elongated, I also feel pain during ovulation. My ultrasound show no cysts , my natural lining on day 17 was 11.8 mm & egg size of 20. My doctor gave trigger shot on day 17 & transfer is due on day 25. My concern is that I have been put on daily Duphaston 10X 3, Susten tab 200X 2, Crinone 8% gel, estrabet 2 X2, Susten inj 2 days, ecosprine 75, Zilargyn daily, vit D, folvite, vit E, antibiotic 5 days, Omnacortil 5 days even while my blood flow, uterus lining, egg size is normal, advice if so much medication is required?