So I just attempted to have sex for the first time ever with this guy i know and really like and we of course did a lot of foreplay beforehand but as soon as the condom went on and he positioned himself over me and tried penetrating my vagina it wasn't entering at all only the tip barely like barely got inside and he kept slipping out even though i kept holding onto his penis to help him go into me but all i felt was a little pain but is it normal for that to happen since it was my first time trying to have sex?