I remember hearing about these old myths too, but they aren't reliable. It's much better to wait for your period date and do a simple home pregnancy test for accurate results.
Please do not rely on pulse checking to confirm pregnancy. It's always best to consult your gynac and get a proper blood test done for your own safety and peace of mind.
Trust in God's timing and use a proper home test kit instead of trying to read your pulse. Keep yourself calm, pray, and take a urine test after your missed period.
Honestly, there is no scientific way to confirm pregnancy by checking your pulse. Your heart rate does rise slightly during pregnancy, but only a urine kit or blood test can actually confirm it.
I understand how exciting it is to look for signs, but checking your wrist pulse won't tell you if you are pregnant. Please take a proper home test kit or see a doctor to know for sure.