I think im pregnant with baby number 3

I've been charting my periods since they came back after my youngest (about a year) and they have been regular never late always on time. According to my ovulation I'm 16 days past my symptoms are:

Bloated

Vomiting here and there

Dizzy

My lower back is ver sore

My boobs are also tender

I'm cramping like Af is going to show tho have been for 4 days now but it's a different kind of cramp kind of like a pulling feeling and I've also had sharp pains on my left side near my ovaries.

I took a test last night and it was a bfn so I'm abit confused as to what's going on.

Does anyone have any insight on what could be going on? Were you pregnant with these symptoms ?