<s>[INST] I have what feels like a baby kicking in my lower abdomen. I took pregnancy tests and they were negative. I also have a regular period every month because I am on birth control. My stomach feel bloated and I am due for my period to start at the end of this week. Why am I feeling this movement? It goes away but then returns around the time I should start my period. [/INST] hello, thenks for putting up your worry.firstlt, the correct use of your birth control pills means you just can't be pregnant. feeling this movements prior to your menses could just be the premenstrual syndrome since it usually comes with your menses.please just be relax, but if it gets worse, you should see your physician.thanks </s>