Is my girlfriend pregnant?

I'm a 22yrs male and my girlfriend is of 21yrs. We stay far away different cities. We always enjoy foreplay but never ever had sex. Recently i visited her last week on 21st, we had foreplay and i kissed and licked her vagina and were totally nude. But i didnt touched my penis to her vagina or any vaginal parts. Neither i ejaculated. Also, the next day we used condom and i did rubbed my penis on her vagina and we enjoyed the act but hereto we didnt had sex. Then i masturbated and ejaculated inside the condom itself but that time she was sitting away from me. Then i wear my underwear and rubbed my penis over her vagina. Now she was about to get her periods on 28th of this month, but she didnt. She is not worried and says due to exertion and hectic schedule her periods do delay. Still how far are the pregnancy changes? Also, if pre-ejaculatory fluid just touches to her clit or labia, can it cause pregnancy? Are there any early symptoms to watch out for regarding pregnancy? Any pills or medicines to take to avoid pregnancy? We are very much worried please consult on the same.

Also, yesterday she complained of severe pain, sweeling n soreness burning in her right nipple.....is that any kind of infection???...i used to suck her nipples for long time.

Dont think shes preg we woman do skip months and stuff the nippe thing same thing happened to me but it didnt last longe then 2 days i unno why happened and my bf didnt suck on it for too long.