This could very well be a sign of pregnancy, anytime your body changes from usual should be tracked.
Breast pain or tenderness is caused by estrogen fluctuation throughout your cycle.
It depends on your ovulation and your ovulation cycle. Anything is possible, however your most fertile times of the month are usually day 12-17 of your cycle.
You should start an ovulation test one to two days before you think you may start ovulating. Ovulation usually begins midway in your cycle. Generally between day 13 and day 17 of a normal cycle.
There usually occurs an ovulation on day 14 of the menstrual cycle. Usually one, occasionally more than one ovum is released from the ovary. It is trapped by the fimbriated end of the fallopian tube. Usually fertilization occurs in the fallopian tube.
Ovulation is the natural process in a woman's body wherein an mature ovarian follicle ruptures and produces an egg. It's part of a woman's menstrual cycle and usually appears on the 14th day after the first day of menstruation. You can predict ovulation by checking out the cycle of your menstruation. If you have a 28 day cycle, ovulation usually comes on the 14th day after your 1st day of menstruation period. You can also check if your ovulating through charting your basal body temperature, cervical mucus changes and through the use of various ovulation kits.
This is when we are most likely to get pregnant. Ovulation usually takes place around 14 days into your cycle, in a 28 day cycle.
One of the methods to predict ovulation is calendar method. You just check you menstrual cycle and calculate ovulation. e.g. If you have a 28-day cycle, ovulation starts around the 14th day of the menstrual cycle. I use this calendar http://www.ladys-calendar.com. and it helps me to know days of ovulation.
There are really two phases, because ovulation is so brief. There is the preovulatory phase, which is the first day of your menstruation (menses) until your ovulation. Now this is the most variable part of your cycle, it could even occur during the latter part of your menstruation (yes you can get pregnant during your period if ovulation coincides with your menstruation). Which means that one's cycle can be longer or shorter depending on environmental and hormonal factors which influence when ovulation occurs. The second phase, postovulatory phase, is more rigid and for each woman is about 12 - 16 days long. So the rhythm pattern: predicting ovulation based on when your period starts and then guessing when ovulation will occur is most definitely not a good method; all because the first phase of your cycle can be so variable, even though the second is not. For most people a cycle of 23 to 35 days is normal. A cycle that is longer than 35 is considered anovulatory, meaning ovulation did not occur at all.
I apologize for all of the information that was thrown at you all at once there. I will agree with Dr. Olubusola that it is a little early to panic, as you stated that you are "trying to relax". You stated that you have taken pregnancy tests, and if you have taken them 2-3 weeks after your expected period, they would have shown positive by now, so that is another worry that you can likely lay to rest. Another possibility is that there is such thing as "anovulatory cycle". This is simply a month in which there is no ovulation. There is often a regular period with the anovulatory cycle, but I have had patients that had no period at all. If you miss another period, then you should consider being evaluated by your gynecologist.
While on the pill you don't have an ovulation cycle - the pill prevents ovulation. Once off the pill you can start tracking ovulation by cervical mucus changes and charting your menstrual cycle. Ovulation happens about 14 days prior to menstruation.
Ovulation.
Ovulation.