Been throwing up...

I have a 4 month old and whenever I was pregnant with her a had bled like I started my period.. but after it had stopped I started to get pregnancy like symptoms; throwing up, sore breasts, and tired all the time. I started bleeding on the 30th and hadn't stopped but I've been throwing up and feeling tired lately I thought.. hmm maybe it's just the heat that could just be making me feel a little nauseated but I had the same symptoms whenever I was pregnant with my baby girl. Could anyone help me? Maybe it's just the cause of me being on my period or possibly the heat. My husband and I do want another baby I know some people might think it's too early but I really want another. Hoping to be pregnant but need some serious advice!! Has anyone else ever bled before finding out they were pregnant?