What should I think ?

I got pregnant July 21,2015 It was my first pregnancy. I spotted for 2 months so the doctor finally told me I was going through a miscarriage. On September 15 my hcg level was all the way down to 31.7. I finally stopped bleeding a week later. I started having sex again with my boyfriend and now I think I could be pregnant again. I started cramping thinking my period was going to start but I hasn't. My breast hurt all around but not my nipples. I've been very horny like I could do it all day if I could. Should I think I'm pregnant? It's too soon to take a test.