Nervous.

Im exactly 37 weeks today. I was at the doctors yesterday for my weekly appointment. The nurse first took my weight and blood pressure then told me to go back into the waiting room to wait for a room, then told me I will need to take my bottoms off to get tested for groub B. (I was so uncomfortable taking my pants and underwear off) I started to feel so weird. I felt so embarassed for no reason. I wanted to run out of there. But whatever I got over it the doctor and nurse were both in the room when the doctor just pretty much stuck a q tip in me and was done. My question is when I actually go into labor I wonder if I will feel the same as I did yesterday. My pregnancy wasnt planned but I feel like I am too young to be having a baby (20) if I cant even let the doctor test me for something lol. Or maybe I am just nervous? This is all new to me I could cry. The nurse was telling me about contractions yesterday to and ask me if I remember... No. I am so scared about labor I have nightmares about it lol. Am I wrong for feeling like this? Has anybody else felt like this? 😳