Pregnancy symptoms

I had some weird pregnancy symptoms when I first got pregnant, I’ve had my baby now and but I’m starting to get the same symptoms as before, is it normal to have them the same?, I have no appetite, diarrhea and jus blah feeling, I haven’t had my period yet since I had my baby 4 months ago but have had lots of sex, thinking of taking a test on the weekend or next week...off and on breastfeeding