Scared to tell my husband..

Please dont judge, i just need some positivity and good thoughts. I am 5 weeks 3 days, and i already had 3 misscariages. My husband was present for all of them, and on the last pregnancy he got so nervous yelling that he doesnt want to do this again, and it was too much for me and we should take a break. We did a lot of tests for the misscariages and everything seem to be fine, they happened for no particular reason. Well i am pregnant again, he doesnt know. I want to see if everything will be ok and then tell him. I am so scared that i will lose this one too.. how long do you think i should wait?