To be pregnant or not to be?

So I took these cheap pregnancy tests and they unmediated came back negative, however I took it before bed, I was nauseas and couldn’t keep anything I had ate, down... so I didn’t know if maybe I was pregnant or just sick.. which led me to the tests... The next day I got a wild hair to check them again and they had faint positive lines.! But, I took clearblue tests with morning pee and both came back negative... Does anybody have any tips or tricks on getting pregnant?.. I’ve been trying since November 2017...