The following statistical analyses will be performed: Descriptive statistics to compare the two groups. Cronbach's alpha test will be used to assess the reliability of the HADS questionnaire. Cronbach's is the most widely used test to objectively measure reliability of an instrument such as a Likert questionnaire (i.e. HADS). One-way ANOVAs will be used to determine if the anxiety and depression levels are significantly different between the two groups (Phase I and II). Mixed ANOVAs will be used to determine if the anxiety and depression levels are significantly different the two groups (Phase I and II) at the different defined points in time (i.e. immediately after the initial ultrasound, after 72 hours and prior to the 14-day follow-up). A post-hoc Tukey-Kramer test will be used to determine if there are statistically significant findings between the two ANOVA tests. A statistically significant difference will be considered as p value <0.05. The data will be checked for abnormalities, homogeneity of variance and outliers. Spurious and missing data will be coded separately and treated as deleted / missing cases.Uni-variable and multi-variable logistic regression analysis will be performed on the existing model and scoring system to determine the relationship between the end point (viable pregnancy) and the addition of new variables: smoking and body mass index (BMI).