Causes of Vaginal Spotting Without Pregnancy

Maybe it seems like you've got a small tear or cut down there. This is something that happens to girls sometimes, especially while on their period and the part is most sensitive at this time. It should get better in a while without any medical intervention. As long as you are gentle and take good care of that area it will get better.

If you have missed the periods for 10 days but still the pregnancy test is negative, then, the possibility is that you are having a hormonal imbalance or may be some other issues. It needs in person evaluation to proper diagnosis and get the right treatment for you.
 

Your period brings a bit of we­ight gain. That's normal. You retain extra water. You fe­el bloated and heavie­r. Drink lots of water. Avoid salty foods. That helps reduce­ water retention. Do light e­xercises. Eat a balanced die­t. These steps can manage­ the temporary weight gain.

After the intercourse if you had periods in March, April, and May, on March 5th, it's unlikely that you're pregnant, as regular periods suggest otherwise.