Help Please!!

Darlin
Ok so we have been ttc for 11 years now. Last month we went in for our first round of IUI. I took 5mg Letrozole for the 5 days went for ultrasound had 4 follicles on my right ovary 1 was perfect size went in for trigger shot and went in the next day for IUI and unfortunately my husband was not able to relieve himself I guess he got too nurveous so we were not able to do the IUI. So this cycle I did same thing  took the 5 mg of Letrozole for the 5 days. Here is where the problem is, so I went in on Friday for my ultrasound and I have 3 follicles on my right with the biggest being 14mm and the others were less than 8 and on the left I have 2 with the biggest being 13mm and the others less than 8. So my Dr. told me to go back today Tuesday( 4 days later) and there was NO CHANGE they were the same size so he recommended I don't do anything for this cycle because I'm already at Day 15 and wait til next cycle but try a higher dosage of the Letrozole. Has anyone had a similar experience and what did they recommend you to do, or what did you do differently the next time. For anyone who responds thanks in advance for your response it is greatly appreciated.