Am I just too early?

Hello ladies I have a question. So I’m a week late so today and yesterday I’ve been taking test and it’s barely popping up positive on the test. According to my last menstrual cycle I’m 5 weeks and 5 days. Could I just be super early and that’s why they’re so faint? My SO and I only had sex three times last month and it was only a week and half before my period was suppose to start which was suppose to start the 30th.