You might want to talk to your dr. about this. If anxiety isn't handled property and early, it can turn into Anxiety -- or in my case, Panic Disorder. It's a case of stress and anxiety getting so out of hand that you can suddenly feel like you're dying of a heart attack and end up in the ER. You're not dying, but you'll sure think you are.
I too used to worry about people liking me. My self-esteem was horrible and I couldn't find even one thing that anyone could like. Then one day I started looking at what I had to offer -- good sense of humor, kindness, intelligence -- and decided if they don't like me with those kinds of qualities, it's their loss not mine.
And one more thing to remember -- if you don't like yourself, how can you expect others to?