Family undermines my pregnancy

Ok so I am so frustrated with my in laws right now. I feel like my sibling and laws and mother and father in law are constantly undermining my pregnancy because I have a sister in law who is 37 weeks and I am only 14 weeks pregnant. It is especially hard because I was pregnant last June and I lost the baby and my sister in law then got pregnant in October. Every time I am around them I feel like no one cares about my feeling or pregnancy and it is all about her. How do I deal? Am I being over sensitive? They say things like your not even that pregnant. Ugh.