Should I make an appointment?

Brittany
Hello! My period is 17 days late today and I'm really confused. Glow has been pretty accurate at predicting my periods but my last one that didn't arrive was due the 24th of August. The previous one started the 1st of August and was light to medium, only lasted 6 days when mine are usually extremely heavy and last 7-9 days. 
My cycles are usually off but not by more than a week. It's been 42 days since the start of my last period. We're not necessarily trying for a baby but were not super cautious. (I'm 25 and in a serious relationship and we eventually want children) we usually use condoms but sometimes we use withdrawal. 
I don't know if it's necessary to add but we had sex 8, 18, 20, 21, 25, 29, and 30 of August.
I had extremely sore breasts around the time my period was supposed to start, a couple days after it was due I had sharp pains in my pelvis (twice it woke me up). Have been feeling extreme nausea but it doesn't last long. Hot flashes, I'm usually cold. And so tired all the time. I went to bed 4 hours early one day, and keep taking naps after work. Just completely exhausted after normal exertion. 
Took a test late morning 2 days ago, it was negative. Took one first pee this morning, negative as well (first response). 
Should I call my dr to get a blood test done? I feel like it's late enough that it would show on a pregnancy test. I'm also wondering if it could be something else like pcos
Thanks in advance for the help 😊❤️