I suggest you to see your gynecologist for a proper diagnosis. Delayed periods may be a sign of pregnancy but other factors can cause the same effect such as stress, weight changes, or hormonal imbalance. Getting a medical opinion is crucial

In pregnancy, you may not experience regular periods cycle. It's possible for some individuals to experience bleeding or spotting during early pregnancy, which might be mistaken for a period. This bleeding is often lighter and shorter than a typical period and is known as "implantation bleeding."

You might have hyperprolactinemia. What happens is this condition leads to the body producing too much of a hormone called prolactin, causing lactation and pain during sex. There are several possible causes, including some medicines you could be on; thyroid problems, or even a little tumor in your brain somewhere. I would advise that you see a doctor as soon as possible.

There can still be a chance of pregnancy. While the risk might be lower due to the short duration and no ejaculation, there's no guaranteed safe time for unprotected sex. Take a test to confirm.

If you are a young woman, breast pain could signify many things. For example, it could just mean that your body is responding to hormonal changes during puberty. On the other hand, these feelings might indicate some injury or infection – they could also be associated with having a cyst in one or both breasts. You should visit a healthcare professional who will then be able to examine and advise accordingly on proper management tactics for dealing with any discomfort related specifically to mammary glands that may arise.

Yes, there is a possibility of pregnancy. Use a home pregnancy test or consult with your doctor