So worried...and scared

So I'm getting ready to test on Tuesday. I'm scared out of my mind. I just don't know how I'm going to deal with it if it's negative. Larry's even anxious this time and that makes this way worse....because I feel like such a big disappointment. I don't want him to be sad if it's negative. I just feel like a failure. I haven't gotten the result yet, but up till this point I've been completely unable to do something that should just be natural. What do I do if it doesn't work this time? I only have one more try with the IUI...and then what? What's the next step? Will it even be possible for us? I'm totally freaking out. I don't know, I'm feeling now like it didn't work. UGH. This waiting is killing me. =o(