hi. i had 2 periods last month, one was on the 6th and lasted 5 days, then another on the 27th. it didnt look like a period so i went to a walk in centre and i did a pregnancy test it came back negative. i have had unprotected sex since and i still havent come on my period. i have been feeling bloated, going to the toilet a lot, feeling sick and having pains in my stomach and my back. what is wrong with my periods and what should i do?