Hello and welcome to HCM,
If the sexual episode was only 4 days ago, it is too early to get pregnancy
symptoms. They come about 1 week after missing periods in most women. So even if there is a pregnancy due to sex 4 days ago it will not produce these symptoms.
These symptoms are most likely due to urine infection. A urine examination, drinking plenty of water to flush bacteria and an antibiotic like nitrofurantoin
if bacteria are found, will help in curing the symptoms.
The bleeding may be due to blood in urine or have more likely come from the vagina due to cervical infection
that may have occurred at the same time as the urine infection. If it recurs, get a vaginal examination and pap smear
to rule out any abnormality.
Hope this satisfies your query.
Thanks for using HCM.
Feel free to ask any more questions that you may have.
Dr Madhuri Bagde
Consultant Obstetrician and Gynecologist