Losing hope

Today I had another US and bloodwork appt. Things look good. I do 75iu of Follistim again tonight and go back in tomorrow morning for another date with the dildocam and bloodsucker. IUI should be on Saturday morning.
I'm losing hope that I will ever become a mother...a coworker asked me today, "why don't you just adopt?!" Uhhh, cause we don't have $25,000 laying around!!!! People think it's so easy to adopt. Of course I want to "save" a baby that doesn't have a family, but why do I have to pay tons of money for it?! If this IUI doesn't work, we'll be out of pocket for any further IUIs, which my RE will do 3 more of. Hmm...that's about $2000 a cycle...we don't even have close to that in savings, so I don't know where we would get if from.
DH's vehicle wouldn't start last night. We jumped it and started. This morning he tried to start it and it wouldn't even turn over. He jumped it again when I got home from work, drove it to get gas, came home, turned it off. Tried to turn it back on and it wouldn't start. It's a piece of junk, but we owe too much on it right now to try to trade it in for something else, so we're stuck. Luckily he works from home so doesn't need to drive anywhere too much.
I just feel like nothing can go right for us! My twin sister seems to have it all...beautiful, smart little 2 yr old girl, pg with boy, only works part-time, husband makes great $$, moving into a bigger house....it just doesn't end...oh well. Life's not fair, right?! I guess it seems like those of us with IF drew the short stick...maybe some day that will change??