How can I stop excessive bleeding after treatment?

Yes but only if it's detected early but a close monitor is necessary. But talk to your doctor whether your overall health condition permits it or not

VAGINAL DISCHARGE is common.... PREGNANCY TEST can confirm pregnancy.... Practice good genital hygiene.... AVOID Douching.... Seek medical advice if discharge smells bad....

After an abortion, women commonly take days or weeks to have bleeding, which is completely normal. Be aware that the bleeding is heavy, it has a bad smell, and you have a fever, that could be evidence of an infection. The infections may appear after abortions but in most cases, they are treated with antibiotics. 

If semen re­mains inside the condom without touching you, the risk of pre­gnancy is minimal. Occasionally, a penis softens before­ withdrawal. Ensure proper fit and usage to pre­vent future concerns. Unle­ss you notice unusual symptoms, stressing is unnece­ssary.

You might have a yeast infection. These are a type of infection that can be found in the vagina which begin to get itchy after a while and might emit white discharge. In some women, an imbalance of yeast can lead to an overgrowth where the vagina becomes too acidic. This is what happens when your vagina has too much yeast in it. You can purchase over-the-counter antifungal creams to help respond to yeast infections.