Late!

I am 3/6 days late on my period. my period usually starts 18-21 days after the last menstruation day, so therefore if it starts at 18 days then I'm now 6 days late...if it starts at 21 days then I'm now 3 days late. For over a week and half I have had little cramping, pelvic pain, nausea, and my body temp is off here and there. I was at the Doctor's office yesterday for a 2nd Opinion on my Ovarian Cysts, and decided to take a pregnancy test while there. The doc said that even if it comes out negative doesn't mean that it is negative and I'll just have to retest again later. Well it came out negative, blahhh. I was really disappointed to hear that, not gonna lie. I'll do another test this coming Sunday. Wish me lunch and pray for me!!! 🙏🙏