HELP!!

On December 18th, my husband and I had intercourse twice. Both times were unprotected and he did not pull out. I was ovulating, or very close to doing so, at that time. On December 20th, I took a plan b. Over a week later, I bled. At first it was very light and the color was pinkish-orange. It got a little bit heavier as time went on but it was nothing like my period. My actual period was due over a week ago and it still hasn’t come. I’ve also been getting a lot of pregnancy symptoms like sore breasts, missed period, abdominal cramping, increase in CM, etc. I took a pregnancy this morning and last night and both were negative but i’m not sure if they were false negatives. I feel like they were, honestly. I’m aware that plan b can throw your cycle off but I heard that it’s ineffective when taken during ovulation. I don’t know what to think