Is it dangerous to use monthly birth control pills with brown bleeding?

Hello doctor, how many weeks old is a fetus when there is a heartbeat? My wife had an ultrasound and the doctor said the fetus is 8 weeks old but there is no heartbeat and said the fetus is stillborn. What does this mean?

Hello doctor! I have menstrual disorders, for 2 months now I still haven't seen it. After going to a private clinic, they gave me medicine to drink to induce menstruation including: 1 pack of round white pills, 1 pack of daily birth control pills. The doctor instructed me to take the round white pills for 10 days, then stop taking the medicine and my period will come for 2-7 days. When my period comes on the 2nd day, I will take the daily birth control pills. But when I took the round white pills, I felt dizzy even though I had eaten. I took the 2nd pill and my period came, so I stopped taking the medicine. I went to the clinic where I was prescribed the medicine and asked, the doctor said the medicine would cause dizziness after taking it and told me to take the daily birth control pills as prescribed, and when I finished the medicine, come back for a check-up and continue treatment. I am very worried, maybe it is because I am stressed or have changed my lifestyle causing menstrual disorders. Will the medicine the doctor gave me have any effect? And will taking birth control pills regularly like that cause infertility? I hope the doctor can advise me, thank you doctor.

My period is about 15 days late. I tested with a test stick and it showed two faint lines. But then I had a lot of brown bleeding. I went for a transvaginal ultrasound, the doctor did not see the gestational sac and asked me to do a beta HCG blood test. My result was 121. The doctor scheduled me to do another beta HCG test in 2 days. But today I have a lot of red blood like menstrual blood. So doctor, can you tell me if I am pregnant?

I don't have children yet, can I get an IUD? I'm currently taking birth control pills. Will this affect my future fertility? Thank you, doctor!

Doctor, I have a dull pain in my lower abdomen but no period. What is the sign of this disease? 3 months ago, I had my period 1 week early, but in the following months, I had my period about 33-35 days (2 times like that). The most recent month, my period was more than 35 days long, but I had symptoms of dull pain in my lower abdomen since I calculated the correct date for my period, but I did not have my period and instead had continuous dull pain in my lower abdomen (often with headaches, frustration, discomfort, etc.) for more than 35 days. I have not had sex, doctor. I hope the doctor can advise me. Thank you, doctor.

Doctor, can you tell me how long the side effects of the 72-hour birth control pill last, and how they affect my menstrual cycle a few months later? I hope you can advise me, thank you.