Pressure!!!!!

So me and my boyfriend recently decided that we want to start TTC he is 28 and I am 24(25 in a month) and we are both as ready as we think we can be, only thing is we are not married and I don't feel like we should get married because of a baby BUT I feel like          I will be judged for not being married and having a baby only because my big sister is married and had a baby after. I know I shouldn't base my life off of hers but I can't help it. Just wondering does anybody else feel that pressure ?