I hate to be called skinny

I hate to be called skinny 

Last week I went out in a date with my Boyfriend I had really good 

time but when we he took me home we had a kiss and he hugged me and he touched my legs and said good bye.

At that night he called me to chat and when we were talking he mentioned how skinny I get and i really should gain some weight for my health and our sexual activities, I get really angry and we fight even though he didn't mean to hurt me but he did and since then i become to concern about my weight and I actually started a new eating style to gain some weight and to get little taller i was   searching on YouTube on ways to do that I started a day after and since now nothing is working am I sick or something ?

To get more confident I download some pictures of skinny girls and upload them to my phone and I search on Google about how good is to be skinny, well sexually is good because you gonna be active and horny and you won't get tired fast as my Bae was thinking, that really helped me kinda until something happened really let me down ... My little sister bought a skinny short for her and when she tries it at home she find it really small and mom tries it it didn't fit too so they came to me and said: Mia try this if it fits on you you got a small ass" what ?? I get a fucking small ass you don't have to tell me , though she wasn't insulting but I diffidently didn't like it so when I was trying it I pretend it didn't fit so I try it in front of them very quickly and throw it :" No mom it's very small" My sister actually find out and she answered :"Why you don't want try it are you ashamed of your small butt" OMG ! I hate to be called skinny or small ass I want to gain weight I want to have a great ass and everybody will stop been such mean to me is anybody know how I could gain weight so fast at least 5 pounds and How to grow taller in a week ? if yes  let me know in a comment and Thank you so mush .