blood after intercourse, will fetus develope normally?

Hi,
Welcome to ehealthforum,
Consider telling everything to your doctor/gynecologist as it will help to assess the extent and severity of problem, and direct you towards proper treatment options. If pregnancy has been confirmed, go ahead for further evaluation to rule out chances of low lying placenta, bleeding from placental separation, retroplacental bleed, etc. Getting serial HCG levels estimation also helps. An ultrasound scan done will help to know the gestational age and viability. Serial HCG levels showing doubling up of the hormone levels in 48-72 hours will show that pregnancy is going on smoothly. Consider getting serial HCG levels done along with the ultrasound scan. If HCG levels are not adequate, then external hormonal supplements would be considered to be started to help you in preventing miscarriage. Cervix is soft during pregnancy and highly susceptible to injury, so avoid any manipulation. The incident will not cause any physical or genetic problem as these are determined by chromosomal factors and sometimes use of other drugs at the time of organ development. Visit your doctor/gynecologist for further evaluation and assistance. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Take adequate rest. Drink plenty of water. Maintain healthy diet. Look out for danger signs like increase in intensity of abdominal cramps, increasing back pain, fresh bleeding etc. Avoid intercourse or vaginal manipulation during first trimester, or as suggested by your doctor/gynecologist after thorough evaluation. Avoid lifting any heavy weights and avoid heavy work. Avoid intercourse unless your doctor/gynecologist clears you for it. Avoid standing for long durations and avoid climbing stairs. Avoid use of caffeinated and carbonated beverages.
Take care.