Question about mucus plug?

hi, im 39 weeks pregnant today and yesterday i got my first cervix dilation test. the obgyn said i was hardly dilated. later that day my boyfriend and i had sex and after awile when i used the bathroom i noticed a very light pink on the toilet paper. i also noticed some pink later that nite in the toilet after i went. i was wondering if this was just because of the cervix check or if it might have been my bloody show? also lately i have more discharge and today it was really stringy and looked almost cottage cheese like, is this my mucus plug? sorry for so many questions this is my first time and i was just really curious