<s>[INST] Had sex on 4th and 5th day and on regular dose of contraceptive pills -Will I get pregnant Hi, I am on regular dosage of contraceptive pills (Overall L). My periods begun this month on 17th March. Now I had an unprotected sex on 20th and 21st (I.e. my 4th and 5th day). The periods ended by end of the 5th day. On 7th day, I.e. 23rd March, I started consuming my regular dose of contraceptive pills. What is the chance of getting pregnant. Please reply. [/INST] HelloThanks for your query. If you have used the birth control pills as prescribed, regularly, without missing a single dose, they offer you almost 95 % chances of protection against a pregnancy. Also, having sex on the 4th and 5th day of the period itself has very fewer chances of resulting in a pregnancy. However, to be absolutely sure, continue taking your birth control pills as prescribed, and be very sincere with them In the rare event that you DO miss a period, please take a home urine pregnancy test at the earliest. Take care </s>