pregnancy or something else?

I wanted to ask everyone what their symptoms were during their early pregnancies. i noticed around the 10th of this month that i started having different symptoms that i normally don’t have which are heartburn, gassy, eating a lot and having cravings, cold/flu like symptoms, peeing a little more than usual. i stopped taking my birth control pill (i wasn’t really consistent w them, i know i know) like around the middle of february. on the 17th of february i was bleeding lightly and thought it was my period until it stopped on the 21st, which my periods are ALWAYS regular and 7 days long, been like that since i first got it. i tried a conception calculator (i know they’re not always accurate) but it said my conception date would’ve been the 3rd of march. other symptoms i’ve been having are sore breasts, they feel heavier and look a little bigger, i’ve been extremely emotional, sleepy, headaches that come and go, cramping a little, feeling sick after i eat. the other day i noticed little blood on the tissue which was pink/bright red and today i woke up feeling sick and nauseous. i remember i took a pregnancy test late last month but it came back negative. i was gonna take another one if i don’t get my period by April 1st. it could be anything i’m just questioning whether it’s pregnancy because i’ve never experienced some of these symptoms before until NOW.