Where do you begin when you have so many problems?

I've been married for two years but have been with my husband for five. Most of the time we seem to be a happy, healthy, normal couple. But I have some trust issues with him for his past indiscretions. I could write a novel on the things this man has put me through. There has been cheating, lying, drugs, and just a complete disregard for my feelings. But its always been so hard for me to just end it because I have always seen the good and the potential in him. Plus I think I got to a point where I've stopped blaming him and started blaming myself. I'm the one who has stuck around. I guess my current problem, and the reason I finally am seeking advice, is this: My husband is currently out of town. He is at GDC. For those none techno gaming nerds GDC is the Game Developers Conference. He left Friday so he has been gone like what seven days now..? He won't be back until Sunday. I think I have spoken to him maybe total of three hours in the last seven days. And that includes texts. I miss him. I'm lonely. I'm currently inbetween jobs and have been home alone with our three dogs. I don't understand why he booked his flight to come back on Sunday when the conference ends Friday. I am trying to be an understanding supportive wife. I am trying to realize that he is busy. They have all day events and mixers and parties at night. Its a great networking experience for him. But when I text him and it takes him four hours to reply.. it hurts my feelings. And quite frankly when he only talks to me for ten minutes before I go to bed (he is three hours behind me at the moment) and rushes off the phone when he apparently is back at the hotel and just on the computer it makes me suspicious that he is doing something he shouldn't. Then to top it off.. one of our friends who also went is on his way back. He posted a message on Facebook saying that 7 days is as long as he can take being away from his wife and child. I am now jealous that my husband doesn't seem to feel this way!! When I told him tonight that I missed him, I was ready for him to come home, and I was tired of only talking to him for ten minutes at a time.. his response "Well its only for a little while." I felt like he was disregarding my feelings. Making me feel like I was being clingy. Other than the standard I love you and miss you at the end of our brief phone calls.. I hadn't said anything. I kept telling him I was glad he was having fun. Am I over reacting?

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