Do u think im going through depression? its long but please take your time to read it! i'll give u 10 points?

well at this point in my life im 20 years old, i have a 3 month old baby which i love so much, but ever since i got pregnant i cry every day, and night, the reason why is because i didnt wanted to be pregnant she wasnt a planned baby, the truth is that when i was 6 i was raped by my step dad, when i told my mom about it i was like 9 i had already been touched and raped but she didnt believe me she made up some excuse by anything i told her he did, perhaps she was inlove with him... i dont know, but that affected me a lot, trying to forget about it ever since, but it hurts me more that she didnt believe me when i told her, in time i found out drugs were actually fun to do, so i was a drug addict for 3 years, doing coke, marijuana, and ecstacy, but one day the guy who i was dating, got me really drunk and than tried to have sex with me, i didnt stop him but i was crying while he was having sex with me, he didnt stop till he noticed it, but for my bad luck that was all it took to get me pregnant, now i have a really cute baby, i dont see that guy at all cause he moved, my mum always tells me how sluty of me was to have a baby with out being married, she wont let me go out, or work, or finish my college, i feel trapped, i wake up in the same room every day, taking care of my baby, and i feel my life is over, my friends only visit me once a month cause my mum always tells them not to come, i feel like this is eating me up all inside, even when i laugh about something really funny i end up in tears, why is this? my mood changes every 5 minutes, and something inside me tells me i need help ASAP... what should i do? you have any numbers i can call? please help i feel like im dawning here!