Mucus plug? Should I call OB?

I’m 35 weeks and was in no labor and delivery last week for contracting but was only dilated to a 1. They never figured out why I was having them, but they eventually slowed and I only have been having them like 8-9 times a day since. This is my second pregnancy and I had my first son at 36 weeks. I know mucus plugs grow back, but I was in the bath tub and this came out? Should I call L&D considering what happened last week or will this just regenerate? Also should I get out of the bath in case of infection or my water breaking unbeknownst? TIA!