Should I call doc or just wait??? FIRST TIME MOM

Ever since 28 weeks I’ve been having a lot of pressure and lightening crotch pain... at my 33 weeks appointment he said I was having contractions and not feeling them and also the baby was head down and in birth canal... I am now almost 35 weeks and for the past 2 days all day long I’ve had constant pressure and burning with the lightening pains. It’s a lot worse if I’m standing or walking.... I haven’t lost my mucus plug yet.. that I know of... should I call my doc and see about getting checked? Or should I wait it out until Wednesday (March 21st) for my doctors appointment??? I’m a first time mom so any tips will help!! 😩😩