Confused!

Jessica

Hi.

I gave the doctors a call today and explained I was pregnant and they told me they'll book me in with the midwife. They then asked me how many weeks I was? I havnt had that confirmed I guessed about 7 weeks. Would this be wrong if I go to my midwife in 2 weeks and my dates are wrong? I'm not sure what to do and how to find out exactly?!

My periods are very irregular and that's why I'm confused on my exact dates.