We really are not equipped to handle any type of suicide threat here.
You are, apparently, already mother to one child. You have, apparently, one internet relationship and another purportedly abusive relationship. You are now apparently pregnant again. You have also previously reported feeling unable to say no to sex. In a word, your life is becoming a trainwreck.
All this given, I cannot emphasize enough that seeking out counseling -- for yourself and your existing child's sake, as well as the second if you intend to bring it to term -- would be HIGHLY advisable for you.
We simply cannot do much online for someone with as many issues and crises as you're juggling: this is a situation which really requires in-person assistance and asessment.
Per the physical abuse and harassment at school and this your very BEST plan of action -- and it is YOU who needs to be proactive per this, like it or not -- would be both to report the attacks to your school administration AND ask them to refer you to counseling services.
The hard truth is that thus far since you've posted here, you've seemed very unwilling to do anything proactive to better your situation, all around, and have been far more interested in blowing the important stuff off to do things like ask for baby names. This just isn't helpful: not for your children, and absolutely not for you. If you want to improve all of these situations, you have just GOT to step up and act in your own best interest and ask for help from people at home, at school and in your immediate community who CAN help you.
If you're unwilling to do that, there isn't a thing we can do for you here.