Sub-fertility and IUI

Hi! So here is some background- I am going through my first round of IUI and Clomid, no trigger (would love to hear thoughts on trigger, does it help with success?) I have low progesterone and DH is “sub-fertile” with 16m count at his analysis. We have one daughter (2y) that we conceived naturally. TTC #2 over a year.

Have you had a BFP after IUI? What kind of infertility/sub-fertility did you and your partner face (if any)? How many rounds of IUI until you got your sweet baby? Singletons or multiples?

I really appreciate any answers!