ok soo me and my boyfriend had been having sex for 7 months now without condoms and i have been using nuvring but last month me and him had sex on my period and 1 weeks after i have been sick with vomiting and cant sleep on my stomach i went ot get a pregnancy test done by blood and it showed negative then im period came on march 6 and ends the 8 we did have sex on the 7 while on my period and im still vomiting and cant sleep on my stomach i do have signs like vomiting sleeping more then ever pain in my back and stomach and sides i go to the washroom more then usually and weird eating habbits soo i took a home test and came out negative again could i still be pregnant ??