I just stated Depo-Provera about a week ago during my period and I stopped bleeding. Question is how long do you have to be on the shot before you can have unprotected sex? And is there any med that can mess up the Depo-Provera shot ?
If you had your shot during the first five days of your period then you have immediate protection from pregnancy.
Yes there are medicine and herbal products that can interfere with the effectiveness of Depo-Provera.
Some of these more common medicines include:
St. John's wort
Always check with your doctor or pharmacist if you need to take a medicine while on Depo-Provera.
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