Late period negative tests

Last month I received 3 faint positive tests on CD 23. By CD 24 my “period” came. It was heavy for 2 days then spotting for 2 days. My cycles are usually 26-28 days. I did test after the bleeding stopped and it was negative.

This month was normal, except I used castor oil a few days (I have fibroids on the outside of my uterus that I am trying to shrink). Well now I’m on CD 31 (3 days late from my longest cycle in the past 2 years) and no period with negative HPTs. I am pretty sure I ovulated around 18-15 days ago but not confirmed with testing.

I have been stressed the last week or so, but not continually throughout my cycle. I literally have no signs of AF showing.

I wonder if I’m possibly pregnant and it’s just taking a bit? I’ve never had inconsistent cycles. Love to hear stories of women who had a similar experience and ended up being pregnant. With my son, I had a positive the day of my missed period.