Hello,
First of all, Congratulations for your pregnancy.
As per the information provided, you are experiencing repetitive thoughts and behaviours suggestive of OCD. You are also having depressive symptoms.
Next Steps
You should immediately consult a psychiatrist for the management of these symptoms. If you wish you can consult me via Practo. We can go for psychological therapies, counselling or relaxation techniques before starting medicines. And if medicines are required, we can start the medicines which will be safe for you and your baby.
Health Tips
Do not rush for starting medicines as preferably medicines should not be taken for first three months of pregnancy, if the disease is not severe enough.