36 weeks.. are these early labor signs?

I’m 36 + 3 and the past 3 days I’ve been getting menstrual cramps throughout the day and nausea. I have Braxton Hicks every day but yesterday I had regular contractions for about 2 hours about every 10 minutes and then they went away (don’t know if that’s normal). I’ve been having a lot of discharge but last night I lost what looked like my mucus plug. It was a long jelly like string of it about 1-2 inches long. I think it was my mucus plug and this morning I lost another big chunk (sorry tmi). Could this be signs labor is coming soon or am I overthinking things?