Btw I took a hpt 2 days after my period and it was negative I waited untiil the following week and took another got a positive. then took a third 5 days layer and got another positive. Sometimes the HCG hormone does not get detected right away to be safe i would wait a bit and test again if no period.
if you were pregnant by now you should have got a positive test. To be on the safe side you can test again, however it sounds more like your cycle is just being a little funny, sometimes stress or other changes can cause your cycle to be late, off or not come at all. Hope this helps! Good luck!