In dire need of some advice!

Ok. Heres my story. I am 26 years old. My starting weight was 74kg (163pounds). Over the course of two years I have brought it down to 66kg (146 pounds). It hasnt been a straight road, there were periods when I digressed and my weight went up. But as of September last year (my weight then was 69kg, 152 pounds) I have been eating clean, around 1200 calories a day, and training around 6 times a week. I usually do fitness videos (mostly Jillian Michaels) and from the start of this year, I have been gyming as well. I feel that my weight loss is coming to a halt this past month. I sometimes drop down to 65 and then Im back up in the 66kg region. I'm 1,58m short, so I am overweight. But i just can't seem to lose any more weight. I told myself that maybe its muscle weight, but I took my measurements and they havent changed since around November! I'm gettin married at the end of March and really need to do something to boost my weight loss efforts. Does anyone have any suggestions? Should I maybe restrict my calories to 1000/day (although that seems a bit low)? Or am I maybe not eating my calories right (anyone please feel free to check out my diary)? Or perhaps anyone has any suggestion for what workouts I should be doing? I find that I am becoming disheartened, and have even considered taking products like USNs CLa or Phedra cut. Taking diet pills is something I swore not to do, I wanted to lose it all naturally, but my motivation has taken a hit by the lack of reaults

Please help!