Symptoms??

Ry

Hey ladies! So i keep getting a BFN on my pregnancy test but i have been feeling SO sick for the past 2 or 3 days. AF is due on the 31st but other than sickness (nausea) and very slight cramps, i don’t have any other symptoms of AF. I keep getting this dull feeling in my right ovary and then it shoots down to my let. It’s switching from the left and right side. It it possible to feel symptoms before you get your BFP?