Im my heart i know i should get it checked out, i dont quite think something is wrong, baby is moving, but i do feel weird, its so hard to explain. This stabbing pain has increased, ive had it before, when not pregnant, but its the timimg of it.
I had random headaches like you describe before I found out I had hypertension when I wasn't pregnant. Last pregnancy I had hypertension throughout pregnancy but had no symptoms whatsoever. I was induced at 36 weeks and the midwives were quite shocked I had no symptoms because I was getting extreme proteins in my urine and and sky rocketed up.

I'd go get checked for peace of mind.

ETA: sorry, just read the outcome! GL with going into labour soon!