When to tell husband

I got a bfp on Saturday at 12dpo on our first cycle of ttc #2. It took me all year to convince my husband to try for another and he finally agreed a few months back that we could try in December. Shocked that it's happened straight away. I'm so nervous to tell him though incase he's not happy. I'm only 3w5days so really early and anxious about an early miscarriage. I had one when trying for #1 and DH was devastated. I was thinking to wait a few days to see the lines getting darker before telling him but this morning he's asked if I'm ok, I seem more tired than usual and a bit quiet. What would you do? Should I just tell him? Or should I wait a few more days? I'm so torn