reichan,
read this:
The most common recovery:
Your bleeding will taper off to spotting within a week, and maybe random spotting will continue for another week. Your hCG drops steadily, usually hitting zero during the end of the spotting, or about 10 days after the miscarriage or D&C. When the spotting ends, you will get strange symptoms. If you use a fertility monitor, it may say you are ovulating, but you are not. You may see lots of cervical mucus coming out, sometimes still brown or yellow, but it is not a fertility sign either. In fact, most of the time, you will not ovulate in this cycle. You should not be trying to get pregnant, either.
Some women find they have mild pregnancy symptoms, or little ovulation cramps. Many many women think they could be pregnant, because strange things are happening and their period is "late" (although almost every post-miscarriage period is late.) These symptoms are due to the body's attempts to regulate its hormones again. It may kick into gear right away, and you will get a new period in four to five weeks, or it may struggle a bit, and the period will not come for seven weeks. If you chart your temperatures, they will be all over the place. This is all perfectly normal and expected. Eventually your period arrives and can be either light or heavy. There is no "normal" right now.
A less common, but still normal, recovery:
Your bleeding tapers off quickly, but with some spotting. You think it is over. Perhaps a week or even two will pass, and you begin to wait for your period. Then suddenly, it begins again. Strong cramping, heavy bleeding, and pain. You are scared and shocked and sad all over again. You hope it is just your period, but it is not. (You must not bleed at all for about 20 days for it to be a real period, otherwise you have not gone through the hormone chain properly.) You call your doctor, who may or may not be responsive. Most will just tell you to call them in a few days if it doesn't stop. You hang up very upset, and don't know why they don't care more about you and your predicament.
That's because within a few days, it does stop, and you are just spotting again. Here is what happened, some tissue was missed during your D&C or natural miscarriage. A bit of placenta clung to the wall of the uterus. It continued to draw a little blood, and the body continued to create very small amounts of pregnancy hormone. Eventually the body realized no baby was there and turned loose of this last bit of tissue. The miscarriage process begins again. Only now will your levels drop to zero and a new cycle begin. You cannot expect a normal period any sooner than four weeks from this, and up to seven weeks could still be normal. Your total wait time from original miscarriage to first period can creep up to nine or ten weeks and still be normal.