13dpiui BFN

Hi, I did a test today and got a BFN...I was on femara 5mg, then did the trigger shot. I had two big follicles, the sperm of my husband was good. Everything looked ok and still got a negative. I know some ladies get a positive later but I dont think will be my case. I have 0 symptoms, no cramps, sore bbs, nothing. I know only 2 out of 10 iui's work but still its so depresing. This is a very lonely road. Just needed to vent out! Thanks!