You are working for a company. You want to take some time off work. You want to tell this to your manager. Write a letter to your manager. In letter you explain why you want to take off, give details of amount of time you need, suggest how your work would be covered while you are away.

Dear Madam, I, Shivani Thakkar, working as microbiologist in your department, am writing to you in regards to getting few days off at work, owing to beginning of my pregnancy. I am an expecting woman and my gynaecologist has advised me to follow a strict bed-rest looking at my medical history. It is known that initial period of pregnancy is very crucial for the embryo to establish in the womb and hence, it is required of me to be away from work for 15 days beginning from tomorrow, viz. date 19. 03. 2021 to 06. 03. 2021. As far as my work is concerned, right now, being an off-season, there is not much ongoing production in the laboratory. However, in case of emergency product requirement, the schedule can be easily managed by the supervisor, who is extremely reliable and well-trained. Kindly approve me of my leave which is applied under unavoidable circumstances. Yours faithfully, Shivani Thakkar.