My partner ejaculated and i touched scarf full of semen but after 2 hrs i came home by bus and masturbated.. does any chances of getting pregnant?

You are more concerned than necessary. No chance of conception. You really need never worry as long as a partner does not ejaculate in your vagina or, rarely, onto your genital area.

The most likely sign of pregnancy is a missed or very late period. Without partner's sperm near your cervix, the likelihood of pregnancy is very unlikely, but if sexual intercourse is frequent, you might want to see a trusted MD to discuss contraceptive options.