Contractions

Claire • Author, programmer, sword fighter, crafter, book-binder. Occasional rants on my website at www.raynfall.com.
I'm officially 36 weeks today, due at the end of March. I keep having contractions - or just very strong kicks that leave me winded, who knows. Feels like the baby is trying to punch its way out at this point.
Honestly, when should I start to worry? Today was pretty bad but there's no sign of my water breaking, even though I'm having trouble walking around because it leaves me so weak. Midwife appointment on Tuesday too so hopefully everything will be okay.
I'm panned out on the couch right now, and Husband is rubbing my stomach. The whole pregnancy has gone very well, just the last month or so has left me completely exhausted. This is my first as well.
I just want this crap to be over already!