<s>[INST] I saw my lmp on 10th of feb. nd am suppose 2 see it again on d 13th of dis mnth cuz my cycle is 31days. But, I hv nt seen it til now nd am hving headache,stomach cramps, pelvic pain atimes nd I hv don pt it s negative. Pls advice me on wot I shld do next. [/INST] Hi, I had gone through your query and understand your concerns.As pregnancy test is negative the reasons could be the following..Some times rarely period may miss for a month or very mildly which we may miss to notice as actual bleeding is replaced by just spotting which leads to all the symptoms you have mentioned. Wait until next date and if it is missed again, Consult your Gynecologist and discuss the situation. Hope this guides you. Thank you </s>