Hi Me And My Partner Are Trying For A Baby

Hi me and my partner are trying for a baby and while I've been fertile this week we've had intercourse this week to try and get pregnant. The last time was Friday & yesterday morning I noticed a bloody discharge as I wiped myself and also I'm suffering constant lower back pain and pelvic pain, I've checked the bleeding this morning and it's twice as much as yesterday and the pelvic and back pain are stronger today. I'm very worried can you please help,