Is there any tabs that can prevent a pregnancy of...

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Is there any medication to prevent pregnancy in 14days of sexual intrecourse ?
there is no medication to prevent pregnancy in this case , as emergency pills only effective in the first 72 hours of sexual intercourse 
What is the best time to do home pregnancy test :
1. first week of next period 
- you can also go see a gynacologist and do a regular check to your productive system and check if there is any early pregnancy changes , which is also in first 2 weeks of next period 
Early pregnancy signs :
1. delayed period 
2. headache 
3. frequant urination or urge to urinate 
4. changes in breast shape and size and may have some pain 
5. increase vigainal discharge 
6. morning sickness
7. vomiting and abodiminal discomfort 
8. constipation 
9. change in mood stutus 
Possible other causes to delayed period :
1. malnutrition and low weight 
2. Hormonal changes 
3. Some medications such as Medroxyprogesterone acetate
4. stress
5. Obesity
6. Thyroid diseases
7. gastic system disease (wheat allergy)
8. ovarian cysts 
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Kind Regards