Periods Lasting Only One Day - Medical Explanation

The vagina is a muscular canal that can dilate and contract. It opens up during arousal for penetration by a penis, dildo, or fingers. If you have any worries about your vaginal health, visit a gynecologist.
 

When you have had a termination and taken some drugs, your body will need time to get better. It is important not to rush into having sex again too soon. Use a condom each time you have sex after an abortion to protect against infections. Take it easy and pay attention to your body’s signals – if something doesn’t feel right, stop. Talk to a doctor if there are any problems or if things don’t seem to be going back to normal.

Sperm require specific conditions to survive and move effectively. In the anus, which is part of the digestive system, the environment is not suitable for sperm survival. 

Pain in the breast while breastfeeding is very common and may be caused by lactation mastitis or milk duct blockage. It is good to see a gynecologist if pain persists, it might be a symptom of a more serious condition. Hence, I advise you to visit a gynecologist or lactation consultant for the right diagnosis and treatment.
 

It's normal to have cycle length variations. Factors like stress affect cycle regularity. A 28-33 day cycle is still regular.. . See a doctor if bleeding is HEAVY or PAINFUL. 

If you’re worried about a possible pregnancy, don’t be. The chances of it happening from what you’ve said are very slim. If there was no ejaculation or confirmed pre-cum inside her, then there is almost no risk at all. Stress can also delay periods. Tell her to relax as much as possible. If her period still doesn’t come, take a home pregnancy test to be sure.