HCG after miscarriage

Caylen • MC in March 14' with our first angel👼Gave birth to our rainbow baby girl 3-26-15💜
Hey ladies. I miscarried about 2 weeks ago and had my blood taken. My HCG was at 43. I go back Monday to get it checked again until it's negative at 5 or below. For those that have miscarried how long did it take for your HCG to be negative?