Trying for a baby

Preggo
Ok.. It took me a few months with our first child but it's been 5 months already I feel like it's not normal is there something I could do that could be helpful? We desperately want another child I never knew it would take this long..;( I know some girls will say "omg it's only 5 mnts" but that's a long time for us. My girl is 2.5 already & I seriously feel so down sometimes when ppl say "oh she is so big already" or keep asking me when I want another baby, I feel so horrible. I really want another child bcuz my daughter is getting bigger & I can see she really wants another sibling. I don't know what we're doing wrong.