Why isnt my OB checking me ? I really think i may be dilated or something

In 35 weeks and have been getting bad lightening crotch except it's in my vagina and pretty much sharp stretching pain in my cervix. I told him about it but he didn't really care so im like okay mustnt be anything but now it's everyday when I move or go over a speed bump or lift myself up or put any pressure down there somehow.

Should I ask him again to check me and should I get checked or is it just lightening crotch to the extreme ?