Hiya, xxx

I know this might sound stupid but basically about three weeks ago my partner and I dry humped (genital to genital, both of us were naked) and I’m not on any contraception. Well, last week I was spotting for a few days in a row and two days ago I was meant to have started my period but nothing has happened - this morning and yesterday I took two pregnancy tests using the first urine of the day but they were both negatives... my cycle always ranges from 24-27 days but I’m a day late... also, I’ve been needing to pee a whole lot more and haven’t had any of my usual PMS symptoms. No cramps (except for very tiny cramps), no major hunger pangs, no mood swings, nothing. I do suffer from anxiety and stress (I’m living in a constant state of it) which I know can push ovulation forward and delay AF but this is the first time my period has been late!! I’ve gained about 3/4/5 lbs in the last month I’d say but nothing major has changed :S do you think I could be pregnant? Thanks so much xxxx