Hello,
Pregnancy can occur only when a sperm fuses with an ova or egg. For this the sperms need to be ejaculated inside the vagina or there should be entry of sperms inside the vagina which travel through the cervix and uterus to reach the egg in the fallopian tube. From the description, chances of pregnancy are less likely because sperms cannot survive for long outside the vagina.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.