11w2d Doppler at home

Kiersten baby #3 due may 2024

I am stressing even though I promised myself I wouldn’t. I am 11w2d with my third pregnancy and I can’t find the heartbeat at home with my fetal Doppler. I have used this same Doppler with my first two babies and been able to find the heartbeat pretty early like 10w. Has anyone else used them and not been able to find the heartbeat at this gestation? I see my ob Tuesday but I am still upset and trying not to be.