Long heavy bleeding for 5 weeks w/3 days between

My daughter had a miscarriage in March...she was only two months pregnant at the time, so they just let it happen naturally...she continued to bleed for several weeks later, but the doctor did not seem to be concerned....she finally stopped, but two months later (in June) she started having very heavy periods, which would stop then start again....she is now in college and bleeding continuously for 5 weeks now with about 3 days in between....we are going to take her to an obgyn but she will probably have a long wait....can you help us so we may have some ideas to talk to the doctor about....We are both very concerned and she does want to have children some day...please respond w/as much info as possible...Thanks so much!