My wife and I have conceived a babe with my body and frozen donor sperm through IUI, with medication support (clomid, ovidrel, and injections of progesterone)
IUI #1, #2, and #3: Dec 2017, Jan 2018, and Feb 2018 - all BFN
HSG Test: April 2018 - all clear!
IUI #4: April 15/16, 2018 - BFP!! EDD: Jan 7, 2019

Re: Weight gain?
I talked to my OB this afternoon and he said there is no cause for concern and he'll see me next week! Whew 😌