If it's within 72 HOURS of sex,, take emergency contraception.. Consider regular birth control.. Get tested for STIs.. Make sure to use protection next time.

Any reason for blood during or after given should be taken seriously. In this case, it is highly recommended that you consult a specialist in gynecology/urology to identify the problem. Given the diagnosis, it can be specified whether the bleeding is menstrual or another underlying reason is there for it. 

It is common to worry when your first sexual intercourse is not on time. It may be a bit late due to stress, weight gain hormonal imbalance, etc. If you think that you might be pregnant then do a pregnancy test to calm down yourself. Remember that every time one should use a condom during sex to avoid pregnancy and getting infections like HIV. 

Siparlactone 100mg may le­ad to unpredictable blee­ding occurrences, eve­n after experie­ncing your monthly cycle. This medication can disrupt hormone le­vels, causing additional bleeding e­pisodes. During such an event, cramping or he­adaches could accompany the blee­ding. If faced with this situation, ensure proper hydration and ade­quate rest. However, if he­avy or prolonged bleeding pe­rsists, consulting a gynecologist is advisable­ for appropriate guidance and recomme­ndations.

It is a normal and natural sexual activity that is common. It isn't associated with negative effects on confidence or self-esteem, nor does it affect the immune system.