What are some ways to have a miscarriage?

I'm 3-4 weeks pregnant and I'm 19 years old, I'm not ready to have a kid and I'm terrified of telling my parents and I'll be heading to job corps soon. I don't know what to do, the dad was telling me he would do anything to make me happy and get a place for me and him but today we where talking about the whole baby thing and he was like I fucked up your life I'm so sorry I'm a bad boyfriend and my doors opening is closed because of the baby. It makes me feel like he telling me I'm going to be doing this all on my own.. plus he is going to the military late this year...
What are some ways to have a miscarriage?
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