Infertility bitterness

This has been an emotionally trying year. I've had 2 miscarriages, the most recent being at the end of October. I suffer from PCOS but otherwise my doctor said everything structurally looks good. Before Christmas, my family announced that one of my 18 year old cousins is pregnant by accident, on christmas day I found out another is pregnant and both of those hit me pretty hard and I'm busy feeling sorry for myself that this hasn't been easy for me. We've been trying for over two years now. One of my close friends from work got married in mid October and started trying. She knows what I'm going through but she doesnt understand it. Anywho, she texted me this morning saying she needed me to give my opinion because she thought she might be seeing things then proceeds to send me a picture of a very positive pregnancy test. I dont think it was done out of malice but my heart hurt for me. Why does this seem so easy for others while I'm struggling every day with just trying to get pregnant and stay pregnant when I do? I am happy for her but I'm so sad for me and it's hard to feel both things simultaneously. I congratulated her through gritted teeth and I feel insincere. I wish her well but I've cried so much today, like full on sobbed in my car. I dont want to say anything to her because I dont want her to think I'm not happy for her. People dont understand the emotional hurricane that is someone dealing with infertility while everyone around them (especially those they are close with) fall pregnant when someone so much as looks at them. I wouldn't wish infertility on my worst enemy. You know full well you aren't alone but that doesnt stop you from feeling like you're the only person on the planet going through this. I just needed to vent where others would understand. Feel free to add your own experiences or feelings.