I'm 5w6d pregnant and everytime i have intercourse with my husband. i see a light blood when i wipe. should i worry?

Should be Ok: The light spotting is probably due to irritation of the cervix. You may have a benign, light infection causing irritation of the cervix or it may be due to the penis irritating the cervix. In either case it won't harm the pregnancy. Try not having deep penetration next time. Your physician will check your cervix at your first pregnancy visit, which should be soon.