Me and my bf had sex on the last day of my periods. We both had dry sex. He moved his erect shaft outside of my vaginal area. He were an underwear+trouser+jeans and I had underwear+leggings. After sometime his jeans got a bit wet. accidentally he touched those wet part from outside of hiss jeans and with that finger he touched my vagina by putting inside my underwear. On the 15th day after that incident I had a minor headache for few minutes and I vomited. This happened when I was sleeping after having lunch. I slept for 2 hrs after vomiting and after waking up I felt okay. Is there any chance of getting pregnant?