If you had an infection due to your abortion, your doctor is absolutely right that you would be cramping and bleeding heavily and that your lymph nodes in your groin would be swollen. I had a uterine infection (not due to an abortion but due to my water breaking early)and it is worse than labor pains. It makes you feel like someone is shredding your uterus with a paper shredder and along with blood, sometimes there is puss, sorry about tmi, but that can happen. I tend to agree with your doctor, it is probably a virus. With bacterial infections of the uterus, the fever you have will get very high, at least 102. Mine shot up to 105.4 and they had to do an emergency c-section and right after they had to cool me down even more, as if the OR was not cold enough. The tampon in for a bit so you can swim, not so smart, but its not like you have been wearing them day in and day out. I would just wait to see your doc unless anything changes and you start to have bad cramps, bleeding or your fever spikes suddenly.