pregnant or not? mum wanting me to have implant

Lexi
So my mum recently had a chat with me about going on some sort of contraception. I'm in a relationship of 8 months with I guy I was very close too before getting together. My mum knows how close me and my boyfriend are and has a thought that I'm ready to have sex. He's 2 years older than me and we've already had sex numerous times. I've been in relationship in the past that also have sexual activity but my mum has no clue about my boyfriend now or my ex's, she still thinks I'm a virgin. Me and my boyfriend have had unprotected sex many times before and this time I think I became pregnant. I took a test after missing my period for 4 days and it came back completely positive, 2 clear dark lines. Then afew days later I began to bleed like a heavy period. At first it started light and then became heavy. It lasted for a good 6 days when usually my periods only last 4-5. I don't know whether I lost the baby or if it was just a thing that happens when pregnant. Then once I came back with a positive test my mum weirdly had a chat about contraception, now I've got an appointment booked in for the 14th of march to have the implant done but I don't know what to do as I think I may already be pregnant? Do I leave it and let them put it in or do I tell my parents? My mums desperate for me to have it done so I can't hold back or tell her no as then she'll be concerned. I just really don't know what to do. I'm going to take a test again in afew days to see if it comes back positive or if I've had a miscarriage. What do you guys think has happened? And should I tell my parents or get the implant done? It's says it won't hurt the baby but I'm not too sure.