6dpo advice needed!

I'm 6dpo today. I was using opk because I recently started keto and wanted to see how it was effecting my cycle. CD17 it was neg and we bd that nite. cd18 ended up being pos. so since 1dpo I've been having extreme PMS symptoms and I never have any usually. it started with mild cramps and bloating, then had pinching in my lower abdomen, severe migraine, my boobs are a little sore, and had a sore throat out of no where. biggest thing I have noticed is with keto my appetite is very control and even before I never had extra cravings before af but my gosh I could eat everything! is it possible I'm pregnant??