Pregnant? HELP!

I got my period in June, I was supposed to get in in July but didn't (was on BC but not for July) we used the pull out method. When I was supposed to start my period I had a tinge of pinkish discharge. Every now and then my CM is thick and white. Sometimes dry. I have yet to get my period BUT I've read diet can effect it also. Lately I've been eating like once a day and small meals at a time not healthy at all but I hardly have time to eat. Could this be why? I haven't taken a pregnancy test yet. I just had a baby, turned 6 months this month. Could it be possible? I can't have another baby now. I can't, if I am pregnant is there anyway to safely miscarry? Please no rude comments. I don't want to have an abortion but I simply can't afford 2 babies right now.