Mucus plug!

So yesterday while driving to airport, i started having contractions that were 5-7 mins apart and it was that way for about 2 1/2 hours. When i got home i put my feet up and drank water and they stopped. Well, this morning i woke up and had gone to the bathroom and when i wiped, i think a part of my mucus plug came out. Im 33wks pregnant with my 2nd baby and with my first none of this had happened(i was induced with my first). About 30 mins after i had lost the mucus plug i started cramping. I called L&D to see if i should go in or not and she said to drink water and try to do things that would help the cramping stop. Now, its been about about hour since this happened, the cramps come and go but now i have a huge headache.. Anyone els having this issue? Any ideas of what might help it go away?? TIA!