Symptoms or over reacting?

I have 25-26 day cycles...

Used Clearblue advanced opk’s this cycle and got no peak... (lots of high days, so not sure if I ovulated at a time where it wasn’t detected with FMU or I didn’t ovulate at all)...

Having some symptoms that aren’t the “norm” for me...

Gas (bad, bad gas)

Headaches (10 minutes for the last 5 days)

Mild cramping on both sides

Just had a brief nausea spell

Took a pt yesterday and today (both negative)

AF is due Tuesday or Wednesday although cautiously optimistic she doesn’t!!!