Am I crazy?

Raina
Hello ladies... i'm a 31yo divorced woman, currently in an exclusive relationship. Im on the pill but have been on antibiotics twice in the last 3 months. I've taken 4 preggo tests, all neg, but I have been extremely fatigued and having the most vivid dreams. I was also nauseous for the first few weeks... could I be preggo but hcg too low to show on at home test? I'm going to ob for my yearly on friday but am just concerned due to the meds I am on.