Nausea with ovulation?

I posted something earlier and I'm still very confused. The past few weeks I've been having really weird, random dreams. Within the last couple days I've been nauseaus, cramping & today my boobs/nipples have been really sore. AF isn't due until the 31st & my last cycle was so light it honestly could've been IB. I never had IB or morning sickness with my first pregnancy and I'm supposed to be on my last day of ovulation today. I took a hpt & it was a BFN. Too soon to tell or am I just overthinking over all of this? I'm normally not like this when I ovulate. 😔