I'm an 18 year old female and I missed my peeiod in Sept(last month). My date was 20-21 but no periods. I wasn't worried as I wasn't sexually active. This month as well, I haven't got my period yet. Two days ago I had oral sex and griding action with bf(naked and without condom). However he ejaculated away from vagina but still our genitals were in contact and precum was present. I'm still a virgin and I know this sounds stupid but any chance I could be pregnant. With my periods already missed for two months, there's a lot of confusion and no way to know and I'm freaking out. Any advice would help.