i got my period and i bled a lot for 3 days!

hello ,am 22 , my period is unstable , the last month my period was perfect timing . but the next one should have occur at 25th of November, but it didn’t come even on 26th when unfortunately i was cuddling with my fiancé and he placed it on to mine and put it for maximum 1 cm as am still a virgin after we finished in about 3 hours i started to bleed a lot until 29 (3 days) i stopped bleeding ( it wasn’t my period though i think it is the hymen) . After that at 2 December i got my period and i bled a lot for 3 days! but it stopped on the end of the third day although my normal period is for 5-6 days , i think its bcz of the stress! After that I had a severe cramps and severe bleeding ( dark brown)for 25 days , after that directly I got my second period and bleed for only 1 day and the rest 3-4 days only period cramps. Noting that I had some pregnancy symptoms ( breast pain , temperature, nose bleeding ( not very often) ,legs and back pain through that miserable month . … sry for my complicated question but im so confused , any chance of being pregnant? Thanks a lot !