Hi
I was supposed to have my period on the 25th March and it would usually last around 4-5 days, I missed the period completely and started bleeding on the 30th. The first day it was just pinkish but the next day it was a normal flow like period, I am still bleeding today.

My last period was only a couple days later than normal.

I've had strange feelings in my lower abdomen and feel different, my stomach is constantly looking bloated...

Any advice?

It sounds to me like you didn't miss your period but that it was just late by 5 days... I doubt you are pregnant, see how your next period is, if you miss it or if it's a very light flow then you should test but it does sound like a normal monthly cycle your having if just a few days late.