你打胎,他第二天就給你離婚,
-- so you do not want to divorce. If he wants and file a case, you have no way to stop the divorce in USA, even if you do not want. The only thing is you will get child support, the amount (standard) of money depends on his income.
他是怕我把警察叫到家裏,讓他前妻知道,影響他的官司。
I do not think it will affect his previous case. Even he lives with you in his first marriage, it does not matter to his divorce case except speeding his divorce.
It is nearly useless to call police, if he does not break law (physical violation). If you have no court order, police can do nothing.
The only thing police can help you may be to help you move out by giving you a ride to hotel or somewhere you choose.