<s>[INST] I got of the BC pill in November and I am currently trying to get pregnant. I was a day late on my period this week, not a big deal but my period is very heavy and my cramps are almost unmanageable. They are paralyzing and hurt all the way through my back. The pain is also making me nauseaus. Should I try to get into see my dr. today? What could be the cause of this? [/INST] Cellophane you for your query. Heavy periods with cramps could be due to a variety of reasons. You could have had an early which miscarried. Stress, anxiety, rapid changes in weight, hormonal medications, thyroid disorder and polycystic ovaries might cause heavy periods. Endometrial hyperplasia (thickening of the lining of the uterus) or fibroid in the uterus could also cause such problems, as do blood thinners. Yes, you do need to see a gynecologist at the earliest to know the exact cause. Take care. </s>