Could I be pregnant?! Ugh.

My period is due in 2 days.. I took a test.. I put it down and looked at it maybe 20-30 mins later and there was a very faint line... i took another & it was negative.

I am cramping.. very nauseous (nearly pukig last night.. boyfriend had to bring me a trash can next to the bed lmao) my boobs are a little sore. I had sex like a lot.. unprotected this month. Lol. We are trying. I had unprotected sex on all the days with the black dots.. i took the first test on the 22nd .. which showed faint line. It was very faint.. & the following on the 25th... which was negative. I have 1 more test left but idk.. i also had a blood test done on the 22nd.. but that came up negative. They didt show the levels. Was it too early to test then?!??!

When should i test again. My last period was Sept 1st - 6th.