Should I Continue Testing While Having Inconsistent Pregnancy Test Results And Symptoms Like Sore Breasts, Nausea, And Unusual Discharge?

I have had a lot of pregnancy symptoms but I can’t tell if I’m pregnant or having another chemical pregnancy. My fiancé and I had unprotected sex about 19 days ago. I had some faint positives (from mornings) and a few negatives a day later in the afternoon (after I drank a lot of ice tea). My boobs hurt so bad at night, goes up my arm pits. My areolar are huge out of nowhere - I have pretty small boobs so this was a huge shock. This vein has appeared in the middle, like a circle, and these white bumps appeared. I normally only have breast pain before my period. I also had a few days of very bad nausea, threw up one time, and have had this thick clear gummy discharge out of nowhere today. I thought I had my period on time, 10 days ago, but it was light and stopped by the end of the second day. I usually have 4 day periods. But I keep getting these faint positive tests and we had sex sooo late in my cycle (day 21 of cycle) and my cycles are normally about 30 days. I thought there was so way we could get pregnant. I thought I would be able to have a clear cut positive by now but the negative tests a got yesterday in the middle of the day make me very discouraged. Should I keep testing? Could something else be making my boobs hurt this bad, with this giant vein and my nipples are huge out of nowhere? Doesn’t even look like my boobs!