My cycles are very irregular so currently in on cycle day 28 and my cycles range from 37-78 days. The last day I had unprotected sex was cycle day 13. A doctor has told me to wait 1 more week to test as I’ve had negative tests but getting pregnancy symptoms. Which got me wondering how is it possible that some people get pregnancy symptoms but it’s to early for them to show a positive? Like surely if the symptoms are there that means there should be enough HCG to confirm it?