It's important to know why periods can be missed. Stress, sudden weight change, intense workouts, hormone irregularities, or some diseases might lead to this. It may not be safe to take period pills without knowing what caused it. Instead, go back to the doctor. They could conduct tests and find out the exact problem then give appropriate treatment.

A faint line may mean you are pregnant, but it could also be due to various factors such as the test's sensitivity, the timing of the test, or evaporation lines. For a more accurate result, you can repeat the test using the first urine of the morning, as it is usually more concentrated.

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. 

After a hysterectomy, the recovery period will significantly improve after four months. Most women find less pain, better movement and back to normal life. Hormonal changes may still occur, and emotions about the transformations occurring in reproductive health might not settle. It is important to make regular follow-up appointments with your Doctor for monitoring of overall well being and addressing any concerns that might be developed during the recovery process.