Am I or am I not????? Going Crazy!!!

Ok...I had my last period on 07/26/08. I was due for my next cycle 08/29/08 (I average 34 days between cycles). I have been off birth control for 2 years now & my husband & I lost a baby in October of 2006 (4 weeks along). I am now 22 days late & have taken 3 different pee tests & all come back negative. I just got a blood test done this week & am awaiting the results. I also got a bladder infection (which I have not had since I was just pregnant with my son in 1996 & my daughter in 1998). My husband & I thought we may be having fertility problems (he is my second husband) but all our tests came back normal & clear. He is now currently deployed overseas for 7 months & is completely convinced I am pregnant & is so excited. I had a bit of cramping around the time of my last expected cycle, like I was going to get it & nothing. Not even spotting. I've noticed I have put on a few pounds but I have completely cut out junk food/pop/other not so healthy foods & am sticking to proper servings of fruits/veggies/salads/multigrain bread...etc totally eating healthly but still noticed a 3 pound weight gain in 2 1/2 weeks. My breasts are a bit tender & itchy at times. It's been over 10 years really since I went through this & I'm just hoping it's just not wishful thinking because my husband & I want to be pregnant so bad...I have been quite emoitonal lately as well. SOme have been telling it's just stress, but I have been much more stressed before & I've never had it delay my period for more than just a few days...again I am 22 days late! I feel like I am but then second guess myself because I want it to be so, so very much!