Confused

Hi I’m 17 and my boyfriend is 18, we are and aren’t ttc. We live together in a 3 bedroom house with his brother and his girlfriend (they are pregnant) hence why we got a 3 bedroom house. I feel like if I was to fall pregnant that we would have to move out. And that everyone would hate me for getting pregnant. I just need some advice do I go ahead with my heart and start my little family or do I go with my head and think of others?