Late after PP period returns...

So I had a baby in February and I bled for 5 weeks. At 7 weeks postpartum I got my first period, despite exclusively breastfeeding. At 8 weeks I felt well enough to start having sex again (I had stitches). My husband bought condoms since I haven’t started any birth control. I don’t want to mess up my milk supply & with what’s going on I haven’t been back to see my doctor.

So my first period after pregnancy was a pretty regular period for me. I’m usually 29 days, and I got my second period 30 days later. That time too was pretty regular for me. This month I expected my period last Monday, the 8th. It didn’t come. I waited about 5 days and took a pregnancy test, I estimated to be around 19 DPO. Negative. Now it’s past a week and still no period. I don’t know if my hormones are making me skip this month, or if I just didn’t have enough hCG to pick up on the test.

I don’t want to tell my husband yet, because I know he’ll worry. He’s already the sole breadwinner right now. Plus our last pregnancy was a twin pregnancy, and we lost one of the babies. He has bad anxiety and depression, and I don’t want to worry him unnecessarily. But now I’m carrying this alone on my shoulders, and I’m not quite sure what to do. 😩

If we are pregnant, this baby will also be due in February before our first turns a year old.