Hello My BF And I Had A Vaginal To Penis

Hello
My BF and I had a vaginal to penis rubbing in a forward and backward direction same as if it was inserted, but it wasn’t. the rubbing took around 10 mins without inserting into vagina than i got tired, so he came away from me. than after 20 mins we did it again but this time he didn't come but i'm afraid from the precum thing.
It happened on my 19 day of cycle. and i ovulated between 15 and 17 day of cycle. I usually have regular periods of 28 days average but in the couple of months ago i had a cycle of 25 days.
Now i'm on my 33 day of cycle and 5 days late. i took a home pregnancy test and it was negative and went to the clinic and took a blood pregnancy test and also was negative. if i'm to be pregnant because i had sex on my 19th day of cycle somehow! which is 14 days ago which is more than enough for implantation to occur and for the hormone to be at least detected in my blood which means a blood pregnancy test should be positive but it wasn't.
I need to know if i'm late because i'm stressed and overthinking or because i'm pregnant somehow even though facts don't support it.
and my boobs are swollen, big and full which I've noticed on my 28 day of cycle but i'm on my 33 day of cycle and hasn't got my period yet!!!

and i say again WITHOUT penetration !!! only grinding