Hi, I Am 32 Years Lady, Got Married Years Ago,

hi, I am 32 years lady, got married years ago, but don't hv any issue or miscarriage, after so many treatment including iui. but now I am under treatment of homoeopathy with gud results in regular menses, improved size of ovum during follicular study, but my sonologist suggested me to hcg injection for rapture. so should I go with injection? n if yes then plz suggest me injection? today is my 23 th day, follicle size was 18mm on 22th day.