late night thoughts getting the best of me

Okay so little background, I have a child already and so does he, we are now trying for our third (first one together) we've been trying for a month now and tracked ovulation to the fricken tee and didn't miss a chance. My first pregnancy was twins but I miscarried one twin at 5 weeks(carried the other baby til 36w5d induced labor), the twins were birth control babies. Anyways, my period is sneaking up on us quick and he's CONVINCED I'm pregnant like he's absolutely sure I am. But I am terrified to take a test, what if I'm not? What if loosing the twin will affect me? Or what if I am and I have another miscarriage? I cannot deal with that loss again. I'm freaking out and wanna stay cool and calm for him but it's so hard! Yes, I have some symptoms which subside along with period symptoms. 😅 I'm just so nervous am praying I miss my period but what if I don't? He will be so upset. 😞