I need thoughts/advice

Hannah

So on May 8th I went to the doctor and he assumed I was pregnant due to my easy bruising. So he had me take a blood pregnancy test. Which I did and that came back negative. Bruising was a vitamin deficiency. And here’s a little background; I had my first son and by the time he was 7 months I wanted to try again but didn’t want to stop breastfeeding. Never ovulated so I didn’t get pregnant until after he was a year old. Now I’ve had our second son and he’s 8 months old. Still breastfeeding, so assume I’m not ovulating again. Occasionally take a pregnancy test and it’s always negative. But within the last couple of weeks I’ve been more dizzy, my hands and feet are swelling up, I’m overly exhausted and normally while breastfeeding my nipples/boobs aren’t sensitive but they occasionally are. I’ve also been irritable which isn’t me unless I’m pregnant(for the most part) and I’ve been bloating a lot which happened right before I found out about our 2nd. So is it a possibility or would buying a test and taking it be a waste of my time because the blood work didn’t show positive?