Yeah I have had many miscarriages and pregnant with my second, definitely tell your partner. That’s one of their main roles, to support you.
You should tell those who you want support from, through this time and through any anxiety, plus through a miscarriage if that should sadly happen. That can be husband, parents, siblings, or friends.
I also had 3 miscarriages before my first and currently pregnant with my second. I think it’s ok to tell your husband and let yourself feel some positive feelings about it. With all my previous miscarriages, I at least felt at peace that while my babies were with me, they felt the joy I felt that they were there. However long they stayed for. Wishing for a great outcome for you this time round.