Nexplanon

Hannah
I had the bar put into my arm on July 29th of this year. My first period began on August 20th and is still going. However, it isn't really much of a period, it's more like just spotting. I'm emotional, gaining weight around my abdomen, experiencing subtle abdominal pain every so often as well as headaches. I have taken three urine tests and they have all been negative. I did some research, and I have come to find that the hormones produced by the implant could hide the hormone the urine tests try to find. So, my question is whether or not I should go get a blood pregnancy test done. I don't want to go spend money on something my husband and I may not be able to afford for no reason, ya know? But on the off chance I could be pregnant the implant can cause pregnancies outside of the uterus, and I really do not want to go through something like that.