Okay so I'm on the depo injection basically because I used to get really heavy periods and I don't want to get pregnant just yet. So I've been on it for over a year and a half and I've never missed any shots. I haven't had any side affects of the injection except from gaining weight and it completely took my periods. About 2 weeks before christmas (25th of December) I started to get pains in my belly and back but as I don't bleed I assumed it was my period but then a week after when I returned home from my boyfriends who I've been with a year and a half I noticed blood in my knickers off having sex which has never happened before and it also stung when I went for a wee so yeah it sounds like a water infection and I was told by someone that it did so I took a wee sample into doctors but without my doctor seeing my results he said it was because I had blood in my wee and gave me some antibiotics for it and I was also on some different antibiotic for my toe infection. I never actually found out my results. I've been told antibiotics can interfere with some contraception especially the pill but I was told antibiotics don't interfere with the injection, is this true?   So on christmas day I never even had a full plate of dinner which isn't like me I usually have 2 plates to myself and on the night time I enjoyed some chicken sticks my mam had bought and ate loads because I really liked them. But then on boxing day the day after christmas I never stopped eating and I was like that for a couple of days, I even got really full off a couple of chips. I started to get pregnancy symptoms such as feeling bloated all the time, sore boobs and feeling a little sick so I done a clear blue pregnancy tests and that came back negative so I left it. But then I started to get headaches, boobs feeling heavier and fuller and just feeling pregnant. I done 2 pregnancy tests out the random on the 17th of January and they came back clearly's positive so the next day I went to the doctors and done one down there and that was negative and so was the blood test. But since then my boobs really hurt when I take my bra off, I've had diarrhea for the past couple of days, I've been waking up during the night sweating and feeling really sick with hot water in my mouth, and now have a sore throat and a metallic taste in my mouth. I am more tired recently but seem to not be sleeping that well. I know someone who's fell pregnant on the injection and my step- mam had all negatives until she was 4 months when pregnant with my brother and that's including blood tests. I have been told it sounds like I am pregnant by a few people as well. And also when I was in the fish shop one time, the smell of fish made me feel sick and then I'm eating my foods I usually like I'm feeling sick after I've ate them. Just want advice, opinions or something. I'm 17 and defo not ready for a baby but if I was to be pregnant the baby would be loved loads and I do hope I'm pregnant. I also have a little lump in one of my boobs which worry's me a little bit.