I NEED HELP ASAP

Sabryna
So I have a irregular period as it is like it's so off the charts but I haven't had it for awhile and I mean that was usual for me but me and my boyfriend have have u protect sex a couple time and we both are worried I'm pergant but I'm nervous to take a pergancy test because aren't there false negatives and idk what to do how do I know that I am or am not pergant someone please help