HELP!!!

Kelly
First off I am not good at all the abbreviations used on this app so please be patient with me. I was suppose to start my period on November 22nd. That same day I had very light spotting, just enough to notice when wiping and it was very dark red. I thought it was the start of my period but I only spotted for a few hours and then cramping started. The cramps were on and off all day for several days ranging from mild to severe. It is now the 1st of December and I still have not started a full period. According to Glow I was suppose to ovulate from November 3rd-9th with peak day being the 8th. I had sex November 1, 4, 5, 7, 8, 12, 16 and 22nd. I have taken two pregnancy tests; one on the 25th and one yesterday...both were negative. I am still having cramps off and on but what is strange is I seem to be having morning sickness. In the morning and most of the day I am nauseous and sometimes will vomit. The nausea will also range from mild to severe. I don't have tender breasts but am having some bowl issues (both constipation and diarrhea). My friends seem to think the spotting and cramps I had were from implantation. I am just so confused...I am having some pregnancy symptoms but all tests so far are negative. HELP!!!