Thread: 2 weeks late, negative tests

Hi,
My period was due August 14th. It's always on time or off by 1 or 2 days, but very regular. I took a test after about 5 days-negative. Then another one this past Thursday-negative again. This has never happened to me. I know stress is a factor, but I've actually been extremely stress free the past couple of months until now that this happened. And I've been under some major stress before and it was never later than 3-4 days.
Just to get all the facts out:
I did have unprotected sex (haven't been on birth control in 2 years) right after I got off of my July period but he pulled out...
In the past couple of weeks, I've had to pee nonstop, every hour at least. Sometimes, I have to go right after I just did.
I'm exhausted all the time, when I usually am an energizer bunny that can run off of 5-6 hours of sleep and always focused at work and out and about with friends. Now, I can barely keep my eyes open, going to bed much earlier and taking naps after work.
Yesterday I went to pee and when I wiped, there was the slightest hint of pinkish blood I guess, but it didn't come back.
Typically, I have really bad cramps a few days prior to getting my period, but nothing similar to it. I have stomach cramping here and there but not too often.
I have these weird "pregnancy symptoms" but my boobs and nipples aren't sore at all, if anything they've gotten bigger, but I've also put on weight in the past month from extra eating.
I have a doctor appt this Wednesday to get blood work, but I'm scared there may be something else wrong and so confused because the tests all say negative.
Any advice?????