Primolut Nor Tablet cannot cause a miscarriage.. It is primarily used for menstrual irregularities and endometriosis.. However, it may cause some side effects like NAUSEA, headache, and irregular bleeding. Consult your doctor before taking any medication. 
Remember to always take caution with medication..

Postinor 2 menstrual bleeding is a common secondary pro-ecpemption reaction associated with emergency contraceptive use, which is usually heavier that implantation bleeds. An implantation bleeding is when a fertilized egg attaches to the uterus and it usually appears as light pink or brown spotting. In case of any abnormal bleeding, one should consult a gynecologist for medical consultation.

There can still be a chance of pregnancy. While the risk might be lower due to the short duration and no ejaculation, there's no guaranteed safe time for unprotected sex. Take a test to confirm.

Obesity and smoking are among the leading causes of infertility. It is advisable that you should see a gynecologist or an obstetrician to know how you can continue with your pregnancy plans, and also ask for advice on weight management

The semen analysis report shows that there are some abnormalities in sperm count, motility and morphology. These effects might be responsible for the problems in fertility. It is advised to see a urologist or andrologist for further assessement and treatment. They can give suitable advice and treatment that may improve the odds for having a baby.