Im now 12 days late and on CD 45

I’m 12 days late with absolutely no symptoms of auntflo showing up. I have a 28-32 day cycle and all the test I’ve taken have been negative but my doctor told me because I’m breastfeeding I may have ovulated later and I’m suppose to wait till next month til they’ll do a blood test 🙄 is it even worth retesting at this point or should I just wait and see if I get my period I’ve always gotten my period every month even if it’s a few days late so I don’t know what’s going on. My DH and I have been TTC but with no luck for 5-6 months now and he want me to retest because he wants me to be pregnant. Every little thing he says it’s because I’m pregnant.