It could be "normal" for you. Women's periods vary greatly in both heaviness & length of time they last. Since it's only been your last two periods, I assume that's not your "normal." I wouldn't be too concerned about it, it may or may not go back to the way it was; however, it's worth mentioning to your OB/Gyn at your next yearly exam. *(It's important to be tested for cervical cancer by your OB doc yearly since it tends not to have symptoms until it's in an advanced stage!)* If the change in your period persists & it's bothering you, an OB/Gyn can prescribe the pill or other form of contraception with hormones to regulate & lighten your periods.
It is normal for you to have a heavier flow for the first few days. This is normal at the beginning of the menstrual cycle. Nonetheless, if you see any cause for alarm, then it would be advisable to see a Gynae.
It is normal for this to occur. Although, there is a possibility that you are undergoing anomalies in your monthly cycles. This can be as a result of stress, changes in diet and weight, and use of different birth control pills. However, you can contact a gynecologist for advice on this.
Most cycles are approximately five to seven days, so if your cycle is actually 14 days, then I would see your doctor. For your period to be heavy the first couple days is not abnormal. My cycle would be heavy three or four days out of five one month, and light all five days the next month.
you may want to see your ob/gyn . you may have fibroids, these are fairly common and will cause abnormal and heavy cycles. depending on your age, this may also be a sign of perimenapause. i wouldnt assume the worse, there are so many things that may affect your cycle including stress. wishing you the well.