Struggling with Infertility and Roommate's Pregnancy Announcement

Hi all, I joined a few weeks ago but I haven't made a post because my anxiety keeps me from stepping out of my comfort zone. I decided to post because I have been really down the last couple of days and could use some friends that may understand differently than my current friends do. So here is what has me down. Get ready for a long post if you read. The other day I got into an argument with my roommate. He and his girlfriend (also my roommate, but was not involved in the argument) are 2 months pregnant. My husband and I have been trying for 5 1/2 years with many doctors visits who all tell me the same thing, I need to lose weight. I have been on a particular diet for the last 3 months, working out regularly, and have lost 10lbs. I am also a part time student and a full time worker. So already my stress is higher than it should be. I tried to politely tell him (he knows of mine and my husband's struggle) that it would be respectful of them to move out because this feels like the biggest disrespect they have done thus far. There have been other things but not related. On top of that for her not to get pregnant would seem a lot simpler, there are many options out there and they both have stated they aren't ready for kids. Even if they had changed their mind I feel like it is something that should be mentioned to the house as a whole that they were going to try or that they had conceived. Bringing kids in changes so much for everyone, whether they move out or stay with the child. It really changes the house. My roommate got upset when I had told him this, and we started to argue. His words were the most hurtful of all he said "it is not our problem you can't get pregnant, that is your own fault." I have never told him that his medical conditions are his fault, nor have I ever bashed on him for having medical issues. This came from someone who has been my friend for the last 8 years, and has seen me go through a lot of situations. I am hurt. I already struggle with the guilt and depression that me not getting pregnant is my fault. But for someone to say it to you out of callousness, is a whole other kind of pain. Now I am less upset with the fact that they are pregnant, because things happen and sometimes not all contraceptives work. I am more upset with what he has said to me and that he feels like he said nothing wrong. He doesn't see that what he said to me was wrong, but as truth. All I want to do is cry because I am my own harshest critic. If you read this far thank you. And I am hopeful things will get better. I just have to get over the pain of harsh words.