Pregnancy symptoms but not pregnant

Hi,
On October 18th I had my coil removed. Everything was fine. No problems at all. Until October 28th, when suddenly I felt nauseous, even to the point of vomiting. I can't smell coffee anymore. I also felt like I had eaten too much all the time, even when I ate very little. The coffee smell worried me, so I took a test this Saturday 5/11. Negative. Because I felt unwell all weekend, I went to the doctor on Monday anyway. Blood test: negative. According to the doctor, it's probably just my hormones. But since yesterday, my gums have started bleeding for no reason...
Are there any other people who had these symptoms after having their coil removed?