Missed period negative hpt...

I've only been tracking my periods and such for 2 months now. I had what looked like implantation bleeding, I've been feeling nauseous with occasional vomiting, SUPER PISSY, very emotional for the last like 2 weeks now. I just started to have super super sore breasts and nipples the last few days now. I should have started on the 8th at the latest but still haven't and that was the last pregnancy test I took out of like 5 and all came back negative. Should I bother going to the Dr or just try another home test? Advice please and TIA!!!