What is this? Mucous plug? Discharge?

First of all I do apologize for the TMI photo. Does anyone know what this looks like? I’m 32 weeks pregnant tomorrow, and I have a doctor appointment Wednesday. I’d just like some input from you ladies that have had this before. I haven’t had any problems besides Braxton Hicks, and minor lower back pain. My discharge for this pregnancy has been very watery so seeing this kinda thing had me puzzled. This isn’t my first child, actually my 4th. The last 2 have been cesarean sections so I haven’t really experienced the various stages of labor/childbirth but one time, and that was 11 years ago. 😂 Any help would be appreciated! Thanks!