Here's an update:
I BD'd last night and got extremely dizzy afterward.
Woke up at 11am a bit ago and felt a lil nauseous and had an extremely stuffy nose.
I tried to eat an Apple just now and one bite made me feel queasy.
I haven't had AF this month and I've had symptoms for a week or so now. Two BFN
I also BD'd on Sept 1, 7, & 14