Jealousy

Cassandra
Back story: It's been 3 years since I've miscarried my twins. I was only 12 weeks and no heartbeat. Turned out to be a molar pregnancy and was a long process of grief and sorrow. 
Now: After 3 years I'm mostly happy however my husband doesn't want to try again till next year. Whenever someone close to me is announcing they're expecting it's like those feelings of sadness come back except more so into jealousy. My sister in-law just announced she was pregnant and I probably didn't seem so thrilled when I should be... 😕
Does anybody else feel this way or have experienced something similar? Don't want to be jealous it just happens. 😔