Okay soo... I have said before that I liked it... well my mind mi...

Okay soo... I have said before that I liked it... well my mind might be changing. I had a bladder infection last month and after using antibiotics to get rid of it got a yeast infection which is not abnormal, when I use antibiotics I normally get a yeast infection. Well this month around the same time I got a slight yeast infection. I have also had breast tenderness the last week or so, I had a weird discharge on saturday but it only lasted one day and I was very emotional last week. So... here is my dilemma is this because of the ring or am I pregnant? (we did have sex while I was on antibiotics which does counter-act birth controll) I took a in home pregnancy test two weeks ago and it came up negative. But I had a friend who was on birth control and her in home tests came up negative when she was pregnant(with twins even). Can anyone help me out here, let me know what you guys think? Or have any of you had negative pregnancy tests on the ring and actually been pregnant? Or has anyone gotten pregnant on the ring? Just some questions I've been having. Thanks!