I think we're done

My husband and I were on our first cycle of clomid this month, and I misread the first time I thought I was ovulating.  It was actually today...so, fast forward to me completely pushing the issue, scheduling sex, and making it no fun. Which led to dh not being able to perform for the first time in the 10 years we've been together. 
I don't like what this process is making us. It's not supposed to be this hard. I'm heartbroken for our dd who is 4 and keeps telling everyone that she is having a baby brother (really, it's her cousin)...she would be just the best big sister. 
I will not make my dh feel worse than he already does about tonight, so I'm writing this to vent a minute. 
Anyone understand?