Finding it hard to be happy

I recently had a miscarriage and had surgery in December. My husband and I have been trying now for three months to get pregnant. I am 3 days late. But I woke up yesterday morning to some slight pink, so I put in a light tampon and went back to sleep. And slept until noonish which isn't normal. When I went to change my tampon there was barely anything on it which isn't normal for me when I spot. And when I wiped there was no color nothing I went all day without wear a pad or tampon and I had nothing. Then this morning same thing. I went to the bathroom there was slight pink so I put a tampon in. And when I just went to change noticed that once again there was barely anything and wiped clean. To make matters worse I got upset with myself when I thought my period had started yesterday and was discouraged. I was already emotional because it was the anniversary of my uncles passing. So when my best friend and sister told me she was pregnant I had a mental breakdown. I feel so horrible but after my miscarriage when my friends announce there pregnancies I just get very strong panic and anxiety attacks that I can't be happy for them. I'm losing my mind.