Really feeling down

Adrine • Iam 26 have a beautiful daughter and a great husband and trying for baby number 2!!
So am really feeling down about this the last 3 weeks I have had mild cramping on the left side also not feeling very good been craving a few things and I started taking the prenatal vitamin bcuz the doctor told me if we're trying for a baby than its best to get my body ready and healthly well I haven't felt cramps and nothing eles in about 2 days it seems like everything went away for a little bit so tonight I get home from work and I go use the restroom well there was pinkish blood or discharge on the toilt paper I don't know what to call it am just really down bcuz me and my husband want another child although it's hurting me a lot more knowing there was a little bit of blood or something