My period lasts from the 19th to the 23rd. Can you tell me which day is my ovulation day?

Dear doctor, my menstrual cycle from the day I start to the day I stop is 4 days. Doctor, can you tell me which day I ovulate? My husband and I want to have our first son, I hope you can help me!

I just had my period 1 day ago and I accidentally had sex but it didn't last long, not even 1 minute. So doctor, can you tell me if you have sex during your period, can you get pregnant? Thank you doctor.

My husband and I had sex right after ovulation but less than 24 hours. From that day until I found out I was pregnant, it was 4 weeks, which is exactly the right time. So, doctor, can you tell me if I have sex after ovulation, I will get pregnant? I didn't miss my period or anything, but I got pregnant right away. This makes my husband suspicious of me and I'm tired. I hope the doctor can advise me, thank you.

If I have sex 5 days before ovulation, is there a chance of getting pregnant? I had sex on March 8 and ovulation was on March 13. Is calculating ovulation effective for contraception?

My period started on the 10th and ended on the 15th, but on the 19th, I had sex outside. So, doctor, can I get pregnant if I ejaculate outside 4 days after my period? My menstrual cycle is 28 days. Because I don't want to abuse drugs, I haven't taken birth control pills. In this case, should I take the initiative to take emergency contraception to ensure safety?

My period just ended 4 days ago. Doctor, can I get pregnant if I have sex 4 days after my period ends?

Last month, I had my period on the 18th. This month, I also had my period on the 18th. How many days is my menstrual cycle? Can you advise me on how to calculate my menstrual cycle accurately?

I went to the gynecologist, the ultrasound showed normal indicators, mild endometritis, and the microbiology test results were normal. Doctor, can you tell me what disease is the sign of black-brown discharge during menstruation? What should I see the doctor? How long can my condition last?

I ovulated and my husband and I had sex 10 days ago and my next period is on the 10th. But today I went for an ultrasound and the doctor wrote that the corpus luteum was on the right side and I went home to wait for another test. So doctor, can you tell me if I have sex 10 days after ovulation, can I get pregnant?

Some women have irregular menstrual cycles or menstrual disorders, so it is difficult to calculate ovulation. So in these cases, how can we calculate ovulation accurately?