Hey Me And My Girlfriend Are 17 And We Got

Hey me and my girlfriend are 17 and we got physical on the 14th of March . I might have had precum on my hand before I fingered her. She took an ipill for safety the next day and bled 7 days later. It was bleeding due to the pill . It's been 6 weeks since we got physical and she hasn't shown any symptom of pregnancy yet , but she missed her period which was due on the fourth of april . She is very irregular in her periods and has missed them 5-6 months in a row . Her periods had only been regular for 2 months and now she again missed this one. Is she pregnant ?