4 days late help

Tay • Hi my name is tay I have been engaged for 3 months and ttc baby #1 for two months now. We got pregnant back in november but lost it. We are now trying again for a miracle to happen.
My period was supposed to come on the 18 this month it still hasn't come the first day I got faint positive on frer. Second day all negatives. Third day two faint positive negative test at doctors and negative qualitative blood test. And today negative but a little faint I'm having a lot of symptoms and thick milky discharge, diarrhea random side creams and lower back pain, dizziness, hot flashes I don't know what to think anymore help ladies