Sore vagina


I posted earlier about first time sex with my husband and that he's quite big. We're having daily sex 2-3 times and penetration is 3.5 inch only yet. My vagina is sore and my husband sex drive is so much so is mine. How many days break from penetration is ok? People i discussed my sex issue keep telling me to try more as sex in these early days can easily get you pregnant. Is any of it true? It burns to even pee now.