preterm labor or normal?

I am 34 weeks. went to the Dr Friday for contractions 30 minutes apart. he said I was 1cm dilated. contract have not stopped since Friday, but still 30 minutes apart. today at the Dr (4 days later), I am now 2 cm dilated and 30% thinned. when I got home I went to the bathroom and there was a pink tint in the toilet paper.

she didn't take me off work or bedrest so she didn't seem too concerned but then i got to thinking, maybe she's just waiting to see how I am at my next appointment in a week. any thoughts?