Preiods And Perimenopause Do Periods Of A Woman Change After First Time Of Sex?

Do periods of a woman change after first time of sex? - preiods and perimenopause

I recently became sexually active) (in January. Before January 2007, my time is usually 5 days (exactly) and run as hard to reduce for the first 2 days, then the next three years and at the end of the 5th Days to expire.

When I is sexually active, I found that my rules have changed. Now that my period heavy with just 3 days to flow on the first day and went to 2 below, then stops. I also have for 2-3 days before the deadline, as a rule does not exist, discovered before.

I had three periods (3 months) and I'm worried. Although we have used condoms (always) and I have 2 pregnancy tests and 1 days before my period was negative. Am I pregnant or preiods change after sex for the first time?

Please help.