Am I/Was I pregnant?

Recently I’ve been eating a lot more than usual and a lot stranger things. My boobs were sore and I was getting headaches which is very rare for me. Think I saw or smelled made me very nauseous and I was sick a lot. I decided to take a pregnancy test and it was negative so I moved on. Especially considering I have the birth control arm implant. My period was late for about a month and my coworker literally told me I was definitely pregnant so I took another test and it showed a faint line. I called my doctor to make an appointment but they couldn’t see me for another week. A few days after I called I started bleeding. More than I’ve ever bled from a period before and some of it was solid. I had some of the worst stomach pains and cramps ever and I was very nauseous. My flows are ALWAYS light and cramps never last more than a day or so. My cousin told me it sounds like it could possibly be a miscarriage and my appointment is still a few days away. Not knowing is killing me. Also I haven’t mentioned any of this to my boyfriend. Should I? What if it’s nothing? What is happening to my body?