a girl with a stalker that wont leave and it gets worse HELP!!!

ok, im almost 19 years old and I have a baby she’s almost 1, and ever since I started staying home more, I have been getting these text messages from a number telling me how hot I was and that they wanted to see me naked and that they would come into my house when im sleeping and that they are watching my every move and a lot more disturbing things. I thought it was a joke so I texted back telling them to go F*ck off and shut up, and that they dint know me or what I looked like or anything, well a couple mins past and I got another message telling me everything!. what color shirt I was wearing my lip rings my tattoos my hair style I had that day and most of all what I was doing at that time and what place in my house I was in. I have that protection thing in my house but im still a bit scared I mean I have a child. I kept getting these messages so I changed my number and some how some way I got them messages again. so I called the cops and they traced the phone to a palce a long ways away the last time it was used. im a bit scared and need some help can any give me some advice on what I should do.