¿Por qué tengo períodos tardíos y dolor en los senos?

You're de­aling with frequent UTIs after your pe­riod. Bacteria cause UTIs by ente­ring your bladder. You might feel pain or burning whe­n urinating. You may need to pee­ often and urine may look cloudy. After me­nstrual flow, bacteria can enter the­ bladder more easily. Drink ple­nty of water. Pee afte­r sexual activity. Wear cotton underpants. The­se steps can help pre­vent UTIs.

It is best to visit a gynecologist who specializes in reproductive health to properly diagnose and treat any potential complications. 

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."

No, TB tests and X-rays are not the methods used to detect pregnancy. 

If you've had sex without protection, you are at high risk of getting pregnant, so don’t miss taking contraceptive pills but it is better to talk to your doctor once

Kissing does not transmit HIV.. Negative results are reliable.. No further testing needed. 

No, I pill is an EMERGENCY contraceptive.
It should be used after unprotected sex.
I pill contains high HORMONE levels.
It may cause side effects like nausea and vomiting.
It's not a regular contraceptive method.
Use condoms or BIRTH control pills instead.
Consult a doctor for more information.....

Late periods may occur since the pill can affect your cycle. Stress can also delay periods. Relax and wait a bit longer. If your period doesn’t arrive, take a pregnancy test. Many factors can cause late periods, so don’t panic!

The combination of having sex while using a condom on Jan 16 and then having periods regularly after that indicates that you are not pregnant. Early pregnancy signs can be a missed period, nausea, and breast tenderness. You can also take a pregnancy test yourself for more confidence.