Losing Weight?

This is humiliating...but maybe someone on here can help. I'm 27, weight almost 300 lbs :(. You're probably wondering why I said that...well I'm trying to exercise. I can remember when I was in high school, I played sports was very active. I got married, settled, gained double my weight. Sad, pathetic..I'm not feeling sorry for myself because I did it. I got divorced and my b/f lives in England. I got sent back from the UK b/c I had no visa, that's not the point..point is my weight...It's my fault and I take full responsibility for it. However, it's depressing. I just need little tips from people who've been in my situation and hope that you can give me some ray of hope. Today I walked 2 miles. I know that's not alot but I did just get off of a 10 hour work shift. I am so fricking tired. I try to count calories and makes sure that I am not eating crap. I don't even get on a scale because I think I've lost weight and it'd kill me if I've been doing all this for months