In this task you are given a medical question pair hand-generated. Your task is to classify a given post into two categories 1) 'Similar' if the given two questions have a same connotation 2) 'Dissimilar' if the given two questions have a different connotation or meaning.
--------
Question: Sentence1: I'm stressed about being pregnant and my period started getting light and short, could my stress cause this? 
 Sentence2: Can stress cause the period to last shorter? Or am I pregnant?

Answer: Similar


Question: Sentence1: I've had a bilateral neck dissection for thyroid cancer in 2011. My neck has been swollen for 3 years. Should I see a lymph node specialist? 
 Sentence2: Is surgery needed to remove an enlarged thyroid gland?

Answer: Dissimilar


Question: Sentence1: After two weeks of oral surgery, my cheek is still swollen and I feel hard lumps on the lower part. It also itches outside. Help? 
 Sentence2: What is the expected recovery time after an oral surgery? When can I get on with a normal life and normal diet?

Answer:
Dissimilar