Alright Ladies I need your help!

This might be a weird question/situation but things are very strange.. last week i started getting really bad breast pains along with headaches and nausea, i took a test and sure enough it was a faint positive. The next day i took another test and it came up negative, the next day the same thing. I noticed 2 days ago the symptoms started dying down and now im getting the same symptoms again including nausea. My question is if my husband and I had sex multiple times in the same ovulation week could i be pregnant again? Is this even possible?