Never seeing my boyfriend again...

I am 16 and my boyfriend is turning 16 in a month or two. We had been dating for a few months and we both decided we felt ready to have sex, so one day we went to his house while his parents were out. My parents aren't super strict on much but my mum especially always is telling me that I should wait to have sex and not do anything until I'm older. I know that I should have talked to her before doing anything, but she wasn't keen on my boyfriend already and I knew she would stop me. Basically I was supposed to get my period a day or two before we had sex, but I'm usually late so I wasn't worried. But a week after I still hadn't got it and I started freaking out (we used protection but there were complications). About a week later I went to work and while I was there my dad went on my computer (not to check up on me, he was trying to set up our new internet) and he found all my messages to my boyfriend and close friends about what happened and how I was worried that I could be pregnant. Basically they went off at me and grounded me for a month, took my phone, computer and all internet privileges and I wasn't allowed to talk to my boyfriend. They then told his parents, which caused so much more drama. Basically it's now been almost 3 months and I have only texted him twice, both times for only a minute or two. My parents are refusing to let me talk or see him, they're saying that I'm not allowed to go anywhere where he could be (which rules out seeing any of my friends from other schools because he's a part of their group). All I want is to see him again, but my mum keeps telling me he used me and that he doesn't care about me. There seems to be nothing I can do to convince them to let me see him again, but I can't keep living like this! :(