When u have ur period, do u suppose to have blood clots and heavy cramps?

See your doctor: Some women have painful periods (dysmenorrhea) or heavy bleeding (menorrhagia) from their first period, others develop this later in life, maybe after having a baby. Either way it is usually treatable with medication, sometimes an iud like Mirena (levonorgestrel) is placed. If you are done having children and you are at least 35 years old, endometrial ablation (like novasure) can really help.

Menorrhagia: Women can have heavy periods because they have fibroids (benign tumors inside the uterus), a bleeding disorder such as hemophilia, or other problems. It is important to visit a gynecologist to see if anything is structurally abnormal. If everything is okay inside, they might then want you to see a hematologist to make sure you don't have an abnormal bleeding tendency.