It is possible that you could be pregnant based on your symptoms, but it's important to remember that these symptoms can also occur for other reasons. Soreness in the breasts and nipples can be a common early sign of pregnancy due to hormonal changes. However, it's best to take a pregnancy test or consult with a healthcare professional for a definitive answer.
In terms of your menstrual cycle, irregular bleeding or spotting can sometimes occur during early pregnancy as well. The dates you mentioned could potentially align with implantation bleeding or an irregular period caused by hormonal fluctuations.
To confirm whether you are pregnant or not, you should take a home pregnancy test after a few days of missed period or visit your doctor for a blood test which can provide more accurate results.
Keep in mind that every woman's body is different, so it's essential not to rely solely on symptoms alone when determining if you are pregnant. If you have any concerns or questions about your fertility journey, it's always best to seek advice from a healthcare professional who can provide personalized guidance based on your specific situation.