Family drama

Renee
So my husband and i just got married on june 3rd, theres a lot of preasure for me to get pregnant, my husband is 26 and im 20 and we've been together 2 years. Today we find out that his sister whos 23 is pregnant. I feel very overwelmed because im scare that what if i cant get pregnant. Theres so much riding on me now. I just need advice. Please help.