Hello, everyone I just joined MFP and I was 160 about 6 weeks ago. I am 22 years old and I am 5'0 FT tall. I am currently as of 5 minutes ago 145.5 pounds. I know you aren't suppose to weigh yourself at night BUT ..... I am at a plateau. I have been 144 or 145 pounds for 3 WEEKS! I joined this site on Monday because I need…