Talk to Gynecologist on Late Period

I am a married girl my cycle used to be 28 days from past 1, 2years. My period cycle went shorter in last to cycle in April it was 26days and in May it was 25 days and first 2 days used to me heavy and bad from 4 used to be like spotting , but it used to be like wavy flow in in 1st 3days lighter on 4rth and spotting on 5th,6th . Ok so me and husband had unprotected sex on 5thdY of my period but he discharged outside totally , then we again had sex after 3,days after periods (10th cycle day)(10thmay),but he didn’t discharge inside,he pulled it out 5,6secs before we got discharged. So on Monday (15th cycle day ) 31st May , we did oral sex and he fingered for a while , after which I noticed slight brown spotting which turned into light red after 1hr and it went light & brown again remained for2more ,it might be due to fingering, I thought it might’ve implantation bleeding if I m not wrong , so today is 27th cycle day ,according to last 2cyles, my periods should have been start