Baby #2?

I haven't been on here in a while, but anybody that followed my story knows what a traumatic pregnancy I had... For those who don't, I was hospitalized at 23 weeks pregnant because I had bulging membranes, stayed in the hospital on strict bed rest until I was 26+5... The whole time I was dilated to 4. My daughter was born at 26 weeks, 1 pound, 12 ounces... and had to spend 3 months in the NICU. (She came home the day after Christmas.) There was a whole lot more going on at the time, but im trying not to ramble on... Anyways, the reason for this post is because I think I'm pregnant... Oh no. I thought I started my period Saturday. This might be TMI, but I need opinions. On Saturday I saw some brown ish blood, which is normal for me on my first day but then I went to change my tampon and there still was no red blood... Going on what is supposed to be day 3 of my period, and still nothing. I don't want to be pregnant. ): me and my daughters father do not get along, and this is the last thing I need, with my daughter being a preemie and all, I'm scared i could be putting this baby at risk. I'm against abortion, so if I am pregnant, I will be keeping it. I'm just anxious and I guess I should take a test, but I'm scared. What do y'all think?