Why is my period missing for 1 month?

the test should be performed not sooner than a week after a missed period. But any abdominal pain or irregular bleeding should be immediate cause for alarm and you need to be evaluated by a gynecologist.
 

After ectopic surgery you can try to conceive after 3 months 

Pregnancy might be a possible. But you must visit a gyneclogist to confirm it, they can suggest you necessary tests to confirm pregnancy

It's okay, sometimes it's absolutely normal that periods can be delayed without any consequent harm, just wait before you start to worry about it. Stress, weight changes, or hormonal imbalances might be the culprits. Keeping track of any other symptoms you might have like cramps or mood swings can help a lot. Drinking plenty of water, eating healthy food, and sleeping enough might help you make your period regular.

The most important thing is not to let the mother and the baby get hurt in pregnancy. Dolact 50/200 tablet contains some such materials, which are neither safe in pregnancy nor can be recommended for such purposes. Besides that, after giving the drug to her, the discomfort from the health may appear. Therefore, the best thing that can be done is to get immediate medical help to ascertain that everything is well.