Unsure of what to do

I miscarried 8/1 at 7 weeks pregnant. I'm still in the process of going through the miscarriage but one of the things that makes me the most sad is that I know I probably won't be able to have a baby for another two years or more. I'm 21 years old and this pregnancy was a fluke, but very much wanted once it was here. My boyfriend (we live together) was super supportive and excited and our families were absolutely ecstatic. I'm currently in college trying to get into nursing school and I know that it would be irresponsible to try and conceive again when I can wait and possibly provide a better life for my child. I just don't know how I can go on and live my life as I did before I got pregnant. I switched everything into "mommy mode" and now I don't know what to do. I feel like I'm damned if I do, damned if I don't.