My period not normal

Ok my period not normal I once went out 5 months without having a period but me and my boyfriend had  sex my period came on the next day my period  last for 7 days but me and my boyfriend had unprotected sex and my period didn't not come on The next month so it's been 32 days I don't know if I'm pregnant but I did take a pregnancy test at the doctors but the test came back negative so they gave me up to 4 weeks to see if I'm pregnant what you ladies thank about this i am having pregnancy symptoms but I just don't know