Do I need to go to the ER?

Earlier today me and my boyfriend were putting together the babies dresser and I had felt my underwear get really really wet it felt like I had laughed to hard and peed myself. Except I felt nothing. No pee feeling or anything. I went to the restroom because it was uncomfortable and as I was going I felt a pulsing(ish) feeling. As if the baby was jumping up and down. Later on I went to the restroom again and felt like sprits of discharge. Now a couple hours later I'm having very slight cramping. My doctors appointment is next Monday so should I just hold off until then? (Sorry for such a confusing post!) 24 WEEKS!