Can't shake the bitterness

We miscarried at 7 1/2 weeks back in August and we are guessing we are about 6 1/2 weeks pregnant right now. My friend told me she got a bfp about 4 weeks ago when we didn't know we were pregnant. They saw a heartbeat at their first appointment. Everything is going really well for them. She is gushing about how well it's all going and how "it was totally meant to be."  I know I should be happy and 0% of me wants her to feel the tragedy of loss, but my jealousy is out of control. I'm so worried everyday and when we did an ultrasound last week we only saw a scab because I was earlier than we thought. It's hard for me to be excited for her when I'm just hoping to stay pregnant myself. Anyone struggled with that?