Too fat?

I met my husband when I was 18. I am now 28 and over the years I have gradually put on 4 stone. I am not comfortable at all in my own skin. I have lots of dresses that I used to wear on nights out that I have no chance of fitting into. I have tried loosing weight but I find it so difficult. I lost about 10lbs before our wedding but have put it all back on again. Recently my husband has been making comments like "should you be eating that" and asks every day if i went to the gym. Today he just came out and said he doesn't like that I have put on so much weight. Its been really upsetting me and im beggining to frel extremely self conscious and he always looks at my stomach. I feel like he is always judging me. He said he will always love me but if I put on any more weight he won't find me sexully attractive any more. He said he's worried about me and doesn't want my health to be affected. Does anyone else's husband or partner do this or is he out of order?