What Are The Chances Of Pregnancy Through TTC Treatment?

Hi doctor.i m 30 yr old ttc since last 5 yrs.this time on day 12 doctor found my follicle size is 30mm with minimum free fluid.next day gave me hcg shot.on day 14 evening they did first IUI. I again get for scan on day 16 doctor told free fluid increases and egg size reduced to 24 mm.he is confused is ovulation done or not.again I went on day 19 for scan doc saw there is bleeding done in follicle.So he said it may be ovulation. Now I get confuse is my IUI works?I also did intercourse after IUI .