PLEASE Give Me Some Insight. I Am On The Brink

PLEASE give me some insight. I am on the brink of insanity. My last period began on December 29th. The period tracker I have on my phone says I ovulated on January 12th. My next period is due on January 26th. Well this past Wednesday the 18th I woke up with some red spotting so I chalked it up to my period coming early (which it never does). All of the sudden it stopped. Then the spotting started again on Thursday morning the 19th. I thought OK this is it. Then all of the sudden it abruptly stopped. Then yesterday morning it started spotting red again and I had a little red in the toilet then it stopped again. Woke up this morning to no blood at all. Keep in mind this blood did not stain my underwear. It only showed up when I wiped. I have took numerous pregnancy tests the past few days and all were negative. I have been having extremely mild pinching cramps, a dull backache, dull headache, been feeling really fatigued, and hungrier than normal, and a little bloated.Also this morning I woke up very nauseated and ended up vomiting. But no more blood. Now here's where it gets tricky. My husband and I had intercourse twice this month. First time was right after my period ended on the 2nd and that time he ejaculated. Second time, was when I was "fertile and ovulating" and he did NOT ejaculate. Here's where it gets even better. BOTH of these times we used encare spermicide suppositories. I have a doctor's appointment with my OB Monday morning to get some answers, but can you guys PLEASE tell me what might be happening? Please I'm about to go nuts. Thanks so much. ~Rebecca