Pregnancy in the water

So I know 4 people who just announced they are pregnant and due July of 2020 one of them being my SIL who got her IUD taken out not even a month later she’s pregnant without even trying. I’m being supportive for them but honestly it’s crushing me that everyone around me is getting pregnant without even trying but my husband and I have been trying for a year and a half. :/ It’s soo hard! Especially when my brother was saying how easy it was for them knowing we’re having a lot of issues! Advice??